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(public plots, sorted by index)
Last update: Mar 1, 2010
| INDEX SUBJECT |
TITLE links to plots |
AUTHOR status: link to info |
|---|---|---|
| Year: 2010 | ||
| Back to top | ||
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10-010 TRANSVERSE inclusive |
The sin phiS amplitudes of the inclusive asymmetry AUT in dependence of xB, measured with an electron beam (top) and a positron beam (center). The open (closed) circles identify the data with Q2 < 1 GeV2 (Q2 > 1 GeV2). The error bars show the statistical uncertainties, while the error boxes show the systematic uncertainties. The asymmetries integrated over xB are shown on the left. Bottom panel: average Q2 vs. xB from data (squares), and the fraction of elastic background events to the total event sample from a Monte Carlo simulation (triangles) Jan 26, 2010 *Colour (eps) *Colour (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
A. Lopez, L. de Nardo, A. de la Ossa
final |
|
10-009 DVCS nuclear |
The sin phi amplitude of the DVCS beam-helicity asymmetry sensitive to the interference term for hydrogen, krypton and xenon as function of t. This amplitude is subject to an additional 3.4% maximal scale uncertainty arising from beam polarimetry. Otherwise as entry 10-008 Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. |
D. Hasch, H. Ye
final |
|
10-008 DVCS nuclear |
The cos phi amplitude of the DVCS beam-charge asymmetry for hydrogen, krypton and xenon as function of t. The inner error bars represent the statistical uncertainty and the full bars the quadratic sum of statistical and systematic uncertainties. The purity of the coherent-enriched Kr and Xe samples is indicated for the two t bins Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. |
D. Hasch, H. Ye
final |
|
10-007 DVCS nuclear |
Nuclear-mass dependence of the sin phi amplitude of the DVCS beam-helicity asymmetry for the coherent-enriched (upper panel) and incoherent-enriched (lower panel) data samples. The coherent-enriched samples have a purity of about 67% except for He with 34%, and the incoherent-enriched samples a purity of about 60%. The inner error bars represent the statistical uncertainty and the full bars the quadratic sum of statistical and systematic uncertainties. This amplitude is subject to an additional 3.4% maximal scale uncertainty arising from beam polarimetry Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 10-003. |
D. Hasch, H. Ye
final |
|
10-006 DVCS nuclear |
Nuclear-mass dependence of the cos phi amplitude of the DVCS beam-charge asymmetry for the coherent-enriched (upper panel) and incoherent-enriched (lower panel) data samples for hydrogen, krypton and xenon. The coherent-enriched samples have a purity of about 67% and the incoherent-enriched samples a purity of about 60%. The inner error bars represent the statistical uncertainty and the full bars the quadratic sum of statistical and systematic uncertainties Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 10-003. |
D. Hasch, H. Ye
final |
|
10-005 DVCS nuclear |
The t dependence of the $sin phi$ amplitude of the DVCS beam-helicity asymmetry sensitive to the interference term, A_{LU,I}^{sin phi}, for hydrogen, krypton and xenon (full symbols) or to a linear combination of the interference and the squared DVCS amplitude, A_{LU,+}^{sin phi}, for helium, nitrogen and neon (open symbols). The error bars (bands) represent the statistical (systematic) uncertainties. This amplitude is subject to an additional 3.4\% maximal scale uncertainty arising from beam polarimetry Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 10-003. |
D. Hasch, H. Ye
final |
|
10-004 DVCS nuclear |
The sin phi amplitude of the DVCS beam-helicity asymmetry sensitive to the squared DVCS amplitude for hydrogen, krypton and xenon as function of $t$. The error bars (bands) represent the statistical (systematic) uncertainties. This amplitude is subject to an additional 3.4\% maximal scale uncertainty arising from beam polarimetry Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 10-003. |
D. Hasch, H. Ye
final |
|
10-003 DVCS nuclear |
The cos phi amplitude of the DVCS beam-charge asymmetry for hydrogen, krypton and xenon as function of t. The error bars (bands) represent the statistical (systematic) uncertainties Jan 25, 2010 *Colour (eps) *Colour (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
D. Hasch, H. Ye
final |
|
10-002 DVCS nuclear |
Distribution (points) of DVCS events selected in the exclusive region as function of -t compared to a MC simulation (solid line). The latter includes coherent Bethe-Heitler (BH) (dashed line), incoherent BH (dotted line) and associated BH (filled area) processes. Background from semi--inclusive neutral meson production is not included Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. |
D. Hasch, H. Ye
final |
|
10-001 DVCS nuclear |
Distributions in squared missing mass (DVCS) from data using positron (filled circles) or electron (empty circles) beams and a xenon target compared to a MC simulation (solid line). The latter includes coherent Bethe--Heitler (BH) (dashed line), incoherent BH (short-dashed line) and associated BH (filled area) processes as well as semi-inclusive background (dash--dotted line). The two vertical solid lines enclose the selected exclusive region for the positron data Jan 25, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. |
D. Hasch, H. Ye
final |
| Year: 2009 | ||
| Back to top | ||
|
09-105a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of the coherence length for three pt2 slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-105b HADRON-ATTENUATION |
As entry 09-105a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-105a. |
G. Elbakyan, N. Akopov
prelim |
|
09-104a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of pt2 for three z slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-104b HADRON-ATTENUATION |
As entry 09-104a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-104a. |
G. Elbakyan, N. Akopov
prelim |
|
09-103a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of Q2 for three pt2 slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-103b HADRON-ATTENUATION |
As entry 09-103a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-103a. |
G. Elbakyan, N. Akopov
prelim |
|
09-102a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of z for three pt2 slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-102b HADRON-ATTENUATION |
As entry 09-102a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-102a. |
G. Elbakyan, N. Akopov
prelim |
|
09-101a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of nu for three pt2 slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-101b HADRON-ATTENUATION |
As entry 09-101a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-101a. |
G. Elbakyan, N. Akopov
prelim |
|
09-100a HADRON-ATTENUATION |
The hadron multiplicity ratio on a target with mass A divided by deuterium, in dependence of nu for three z slices for positively charged hadrons, separately for pions, kaons and protons. The inner error bars indicate the statistical uncertainties, the outer error bars the total uncertainties obtained by adding statistical and systematic uncertainties in quadrature Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
G. Elbakyan, N. Akopov
prelim |
|
09-100b HADRON-ATTENUATION |
As entry 09-100a, but for negatively charged hadrons Jan 29, 2010 *Colour *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-100a. |
G. Elbakyan, N. Akopov
prelim |
|
09-099 DVCS deuterium |
DVCS asymmetry sin(n phi) amplitudes with respect to longitudinal vector target polarization of the deuterium target, for a charge-averaged lepton beam with one beam helicity. There is an overall 5.3% scale uncertainty arising from the uncertainty in the measurement of the target polarization Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-098 DVCS deuterium |
DVCS asymmetry cos(n phi) amplitudes with respect to longitudinal vector target polarization of the deuterium target, for a charge-averaged lepton beam with one beam helicity. There is an overall 5.7% scale uncertainty arising from the uncertainties in the measurement of the beam and target polarizations Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-097 DVCS deuterium |
DVCS double spin asymmetry sin(n phi) amplitudes with respect to lepton charge and longitudinal vector polarization of the deuterium target. There is an overall 5.3% scale uncertainty arising from the uncertainty in the measurement of the target polarization Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-096 DVCS deuterium |
DVCS double spin asymmetry cos(n phi) amplitudes with respect to lepton charge and longitudinal vector polarization of the deuterium target. There is an overall 5.7% scale uncertainty arising from the uncertainties in the measurement of the beam and target polarizations Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-095 DVCS deuterium |
DVCS beam charge asymmetry amplitudes for a lepton beam with only one helicity on a longitudinally polarized deuterium target with vanishing vector polarization. There is an overall 2.2% scale uncertainty arising from the uncertainty in the measurement of the beam polarization Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: Supporting plot. The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-094 DVCS deuterium |
DVCS Double-spin asymmetry amplitudes extracted from the longitudinally-polarized deuterium data (squares) compared with the 'similar' asymmetry amplitudes obtained for the longitudinally-polarized hydrogen data. The error bars (bands) represent the statistical (systematic) uncertainties. There is an overall 4.4% (5.3%) scale uncertainty arising from the uncertainty in the measurement of the beam and target polarization in case of deuterium (hydrogen) data Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-093 DVCS deuterium |
DVCS Beam-charge asymmetry amplitudes extracted from the longitudinally-polarized deuterium data (squares) compared with the 'similar' asymmetry amplitudes obtained for the unpolarized deuterium data (triangles). The error bars (bands) represent the statistical (systematic) uncertainties. The hatched bands are theoretical GPD calculations averaged over incoherent processes on the proton and neutron Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-092. |
A. Movsisyan, H. Marukyan
prelim |
|
09-092 DVCS deuterium |
DVCS Beam-helicity asymmetry amplitudes extracted from the longitudinally-polarized deuterium data (squares) compared with the 'similar' asymmetry amplitudes obtained for the unpolarized deuterium data (triangles). The error bars (bands) represent the statistical (systematic) uncertainties. The hatched bands are theoretical GPD calculations averaged over incoherent processes on the proton and neutron. The lowest panel shows the simulated fractions of the coherent and resonant production. There is an overall 1.9% (2.4%) scale uncertainty arising from the uncertainty in the measurement of the beam polarization in case of polarized (unpolarized) deuterium data Jan 22, 2010 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
A. Movsisyan, H. Marukyan
prelim |
|
09-091 EXCLUSIVE pion |
Model predictions for the sin(phi-phiS) Fourier amplitude as a function of -t'. The curves represents predictions of GPDmodel calculations. The full circles show the values of Asin(phi-phiS)_{UT,\ell} is taken from Fig. 1 (entry 09-090). The error bars (bands) represent the statistical (systematic) uncertainties Dec 21, 2009 *Colour *Colour (eps) *Colour (pdf) *Data INFO: The data values are attached to this entry. |
I. Hristova
final |
|
09-090 EXCLUSIVE pion |
The set of six Fourier amplitudes (A_{UT,\ell}) describing the sine modulations of the single-spin azimuthal asymmetry for unpolarized (U) beam and transverse (T) target polarization, in bins of -t', xB, and Q2. The error bars (bands) represent the statistical (systematic) uncertainties. The results receive an additional 8.2% scale uncertainty corresponding to the target polarization uncertainty Dec 21, 2009 *Colour *Colour (eps) *Colour (pdf) *Data INFO: The data values are attached to this entry. |
I. Hristova
final |
|
09-090b EXCLUSIVE pion |
Top panel: for the suqared missing mass dependence of the normalised yield Npi^+ and Npi^- for data (points) and Pythia Monte Carlo (histograms). Middle panel: the difference Npi^+-Npi^- of the distributions of the top panel (including Pythia MC). Bottom panel: as the middle panel, but with an MC histogram from the exclusive event generator normalised to data. The inner error bars represent the statistical uncertainty and the outer error bars represent the quadratic sum of statistical and systematic uncertainties Dec 21, 2009 *Colour *Colour (eps) *Colour (pdf) *Data INFO: Supporting plot that is not shown in the publication. The data values are attached to this entry. |
I. Hristova
final |
|
09-089 DVCS deuterium |
The deuteron elastic form factors. See caption of Fig. 3 for more details Dec 10, 2009 *Colour (eps) *Colour (pdf) |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-088 DVCS deuterium |
The measured distribution of electroproduced real-photon events versus the squared missing mass MX2. The solid curve represents a Monte Carlo simulation. See caption of Fig. 4 for more details Dec 10, 2009 *Colour (eps) *Colour (pdf) |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-087 DVCS deuterium |
Distribution in the constrained Mandelstam variable tc of events selected in the exclusive region of MX2. See caption of Fig. 5 for more details Dec 10, 2009 *Colour (eps) *Colour (pdf) |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-086 DVCS deuterium |
Amplitudes of the DVCS beam-charge asymmetry in 6 bins of -tc, xN, or Q2 on an unpolarized deuterium target. The error bars (bands) represent the statistical (systematic) uncertainties. Also included are VGG model calculations and the simulated fractions of coherent and resonant production in each kinematic bin Dec 10, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The data values for each 6 kinematic bins are contained in the file attached to this entry. The data values for 4 kinematic bins (old binning) are attached to entry 09-085. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-085 DVCS deuterium |
Leading amplitudes of the DVCS beam-helicity asymmetries in 6 bins of -tc, xN, or Q2 on an unpolarized deuterium target. The amplitude in the top row is sensitive to the squared DVCS term, while the amplitudes in the 2nd and 3rd row are sensitive to the Bethe-Heitler/DVCS interference term. There is an overall 2.4% scale uncertainty arising from the uncertainty in the measurement of the beam polarization. The error bars (bands) represent the statistical (systematic) uncertainties. Also included are VGG model calculations Dec 10, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The data values (for 6 kinematic bins) are contained in the file attached to entry 09-086. The data values for each 4 kinematic bins are contained in the file attached to this entry. The 4-bins result is only given for completeness, while this publication only shows results for 6 kinematic bins. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-084 DVCS deuterium |
The cos(0\phi) amplitudes of the DVCS beam-helicity asymmetries that are included as a consistency test in the maximum likelihood fit Dec 10, 2009 *Colour (eps) *Colour (pdf) INFO: Supportive plot. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-083 DVCS deuterium |
Amplitudes of the DVCS beam-charge asymmetry in 6 bins of -tc, xN, or Q2 on an unpolarized deuterium target and on an unpolarized hydrogen target. The error bars (bands) represent the statistical (systematic) uncertainties Dec 10, 2009 *Colour (eps) *Colour (pdf) INFO: The deuterium values are contained in the data file attached to entry 09-089, while the hydrogen values are contained in the file attached to entry 09-071. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-082 DVCS deuterium |
Amplitudes of the DVCS beam-helicity asymmetries that are sensitive to the squared DVCS term in 6 bins of -tc, xN, or Q2 on an unpolarized deuterium target and on an unpolarized hydrogen target. The error bars (bands) represent the statistical (systematic) uncertainties Dec 10, 2009 *Colour (eps) *Colour (pdf) INFO: The deuterium values are contained in the data file attached to entry 09-089, while the hydrogen values are contained in the file attached to entry 09-071. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-081 DVCS deuterium |
Amplitudes of the DVCS beam-helicity asymmetries that are sensitive to the Bethe-Heitler/DVCS interference term in 6 bins of -tc, xN, or Q2 on an unpolarized deuterium target and on an unpolarized hydrogen target. The error bars (bands) represent the statistical (systematic) uncertainties Dec 10, 2009 *Colour (eps) *Colour (pdf) INFO: The deuterium values are contained in the data file attached to entry 09-089, while the hydrogen values are contained in the file attached to entry 09-071. |
H. Marukyan, G. Hill, C.A. Miller, A. Movsisyan
final |
|
09-080 EXCLUSIVE rho, sivers |
The extracted amplitudes of the sin(phi-phiS) component of AUT for longitudinally and transversely polarized Rho0 mesons. The inner error bars represent the statistical uncertainties. The full error bars represent the quadratic sum of the statistical and systematic uncertainties. In addition there is an overall scale uncertainty of 8.1% from the uncertainty in the target polarization Dec 9, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
A. Rostomyan
final |
|
09-079 EXCLUSIVE rho, sivers |
Values of SDMEs, or combinations thereof, for a transversely polarized proton target and an unpolarized beam. The SDMEs are sorted into three categories, which are separated from each other by the solid horizontal lines. From top to bottom: SDMEs containing s-channel helicity-conserving amplitudes, combinations containing at least one s-channel helicity-changing amplitude, and SDMEs containing two s-channel helicity-changing amplitudes. Within the second category the combinations are sorted into three groups associated with different virtual photon and Rho0 polarizations. The inner error bars represent the statistical uncertainties. The full error bars represent the quadratic sum of the statistical and systematic uncertainties. In addition there is an overall scale uncertainty of 8.1% due to the uncertainty in the target polarization Dec 9, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
A. Rostomyan
final |
|
09-078 EXCLUSIVE rho, sivers |
The Delta E distributions of the measured yield (number of counts within the acceptance divided by the integrated luminosity) (dots) and a Monte Carlo simulation with Pythia6 of the non-exclusive background normalized to the same integrated luminosity (histogram). The kinematic cuts and the requirements 0.6 GeV < Mpipi < 1.0 GeV and MKK > 1.04 GeV were applied. The selected exclusive region is indicated by the dashed area Dec 10, 2009 *Colour (eps) *Colour (pdf) |
A. Rostomyan
final |
|
09-077 EXCLUSIVE rho, sivers |
The polar and azimuthal angles of the decay pi^+ of the Rho0 in the Rho0 rest frame. The positive z-axis is taken opposite to the direction of the residual proton, while the angle phi is defined with respect to the hadron production plane Dec 10, 2009 *Colour (eps) *Colour (pdf) |
A. Rostomyan
final |
|
09-076 EXCLUSIVE rho, sivers |
The lepton scattering and hadron production planes together with the azimuthal angles phi and phiS Dec 10, 2009 *Colour (eps) *Colour (pdf) |
A. Rostomyan
final |
|
09-075 DVCS |
DVCS overview plot showing all azimuthal asymmetry amplitudes in the entire HERMES kinematic range ("overall"/"integrated") from data taken in the years 1996-2005. This includes data on the unpolarized hydrogen and deuterium targets, the longitudinally polarized hydrogen and deuterium targets and the transversely polarized hydrogen target. Shown are the leading amplitudes of the beam charge, the beam helicity, the target spin and the double spin asymmetries, which are all sensitive to different GPDs (real or imaginary part of corresponding Compton form factors). The inner error bars give the statistical uncertainties, the outer error bars the quadratic sum of statistical and systematic uncertainties Mar 1, 2010 *Colour (eps) *Colour (pdf) INFO: The data shown in this plot is partially released (preliminary: DC80, DC81), partially published (final: DC68, DC39, DC69). See the other DVCS entries for the kinematic dependences of the individual amplitudes. |
D. Mahon and the DVCSgroup
prelim |
|
09-074 HADRON-ATTENUATION pt broadening |
The nu, Q2, xB, and z dependences of the average squared transverse momentum of the detected hadron type (pi+, pi-, or K+) for the deuterium target (top row), and pt broadening (remaining rows) for pi+ and pi- produced on He, Ne, Kr, and Xe targets, and for K+ produced on a Xe target (bottom row). The inner error bars represent the stataistical uncertainties; the total bars represent the total uncertainty, obtained by adding statistical and sytematic uncertainties in quadrature Nov 2, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
Y. Van Haarlem
final |
|
09-073 HADRON-ATTENUATION pt broadening |
The pt broadening for positively and negatively charged pions and positively charged kaons as a function of atomic mass number A. The inner error bars represent the stataistical uncertainties; the total bars represent the total uncertainty, obtained by adding statistical and sytematic uncertainties in quadrature Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-074. |
Y. Van Haarlem
final |
|
09-072 DVCS proton |
Beam charge asymmetry amplitudes in Deeply Virtual Compton Scattering (DVCS) from a hydrogen target. Shown are the cos0\phi, cos\phi, cos2\phi, and cos3\phi amplitudes in bins of -t for 3 different bins in xB and resulting different average Q2 (2-dimensional representation, otherwise as 09-071). The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. All 1996-2005 hydrogen data Nov 2, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The 2 dimensional data values are contained in the file attached to this entry. |
D. Zeiler and F. Ellinghaus
final |
|
09-071 DVCS proton |
Beam charge asymmetry amplitudes in Deeply Virtual Compton Scattering (DVCS) from a hydrogen target. Shown are the cos0\phi, cos\phi, cos2\phi, and cos3\phi amplitudes in bins of -t, xB, or Q2 (1-dimensional representation). Also shown is the integrated value presenting the data in a single bin ('overall'). All 1996-2005 hydrogen data. The bottom row gives for each bin the fraction of the 'associated' process where the proton is excited to a resonant state. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Also shown are model calculations using the 'VGG' model, or the Dual 'GT' model Nov 2, 2009 *Colour (eps) *Colour (pdf) *Data INFO: The 1 dimensional data values are contained in the file attached to this entry. |
D. Zeiler and F. Ellinghaus
final |
|
09-071a DVCS proton |
As entry 09-071, but only the panel showing the constant term (cos0\phi) of AC Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The 1 dimensional data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-071b DVCS proton |
As entry 09-071, but only the panel showing the cos\phi term of of AC Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The 1 dimensional data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-071c DVCS proton |
As entry 09-071, but only the panel showing the cos2\phi term of of AC Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The 1 dimensional data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-071d DVCS proton |
As entry 09-071, but only the panel showing the cos3\phi term of of AC Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The 1 dimensional data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-070 DVCS proton |
Beam helicity asymmetry amplitudes in Deeply Virtual Compton Scattering (DVCS) from a hydrogen target. Shown are the sin\phi and sin2\phi amplitudes of the DVCS-Bethe-Heitler interference term and the sin\phi amplitude of the squared DVCS term in bins of -t for 3 different bins in xB and resulting different average Q2 (2-dimensional representation, otherwise as 09-069). The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Not included is a 2.8% scale uncertainty due to the measurement of the beam polarization. All 1996-2005 hydrogen data Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-072. |
D. Zeiler and F. Ellinghaus
final |
|
09-069 DVCS proton |
Beam helicity asymmetry amplitudes in Deeply Virtual Compton Scattering (DVCS) from a hydrogen target. Shown are the sin\phi and sin2\phi amplitudes of the DVCS-Bethe-Heitler interference term and the sin\phi amplitude of the squared DVCS term in bins of -t, xB, or Q2 (1-dimensional representation). Also shown is the integrated value presenting the data in a single bin ('overall'). All 1996-2005 hydrogen data. The bottom row gives for each bin the fraction of the 'associated' process where the proton is excited to a resonant state. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Not included is a 2.8% scale uncertainty due to the measurement of the beam polarization. Also shown are model calculations using the 'VGG' model, or the Dual 'GT' model Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-069a DVCS proton |
As entry 09-069, but only the panel showing the sin\phi moment of the A_{LU}^Interference Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-069b DVCS proton |
As entry 09-069, but only the panel showing the sin\phi moment of the A_{LU}^DVCS Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-069c DVCS proton |
As entry 09-069, but only the panel showing the sin2\phi moment of the A_{LU}^Interference Dec 7, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-071. |
D. Zeiler and F. Ellinghaus
final |
|
09-068a DVCS proton |
Feynman-like diagrams of the DVCS process ('normal' and 'crossed') Nov 2, 2009 *Colour (eps) *Colour (pdf) |
D. Zeiler and F. Ellinghaus
final |
|
09-068b DVCS proton |
Feynman-like diagrams of the Bethe-Heitler process (initial and final state radiation) Nov 2, 2009 *Colour (eps) *Colour (pdf) |
D. Zeiler and F. Ellinghaus
final |
|
09-067 DVCS proton |
The double-spin asymmetry (ALL) amplitudes in DVCS from a longitudinally polarized hydrogen target. Shown are the cos0\phi, the cos\phi and the cos2\phi amplitudes in bins of t, xB, or Q2. Also shown is the integrated value presenting the data in a single bin. The bottom row gives for each bin the fraction of the 'associated' process where the proton is excited to a resonant state. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Also shown are model calculations using the 'VGG' code (Regge type ansatz). Please note that the AUL amplitudes (LTSA) will only be released by the publication of the paper Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
D. Mahon and M. Murray
prelim |
|
09-066 DVCS proton |
The double-spin asymmetry (ALL) cos0\phi amplitude in DVCS from a longitudinally polarized hydrogen target, in bins of t, xB, or Q2. Also shown is the integrated value presenting the data in a single bin. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Also shown are model calculations using the 'VGG' code (Regge type ansatz). Please note that the AUL amplitudes (LTSA) will only be released by the publication of the paper Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-067. |
D. Mahon and M. Murray
prelim |
|
09-065 DVCS proton |
The double-spin asymmetry (ALL) cos\phi amplitude in DVCS from a longitudinally polarized hydrogen target, in bins of t, xB, or Q2. Also shown is the integrated value presenting the data in a single bin. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Also shown are model calculations using the 'VGG' code (Regge type ansatz). Please note that the AUL amplitudes (LTSA) will only be released by the publication of the paper Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-067. |
D. Mahon and M. Murray
prelim |
|
09-064 DVCS proton |
The double-spin asymmetry (ALL) cos2\phi amplitude in DVCS from a longitudinally polarized hydrogen target, in bins of t, xB, or Q2. Also shown is the integrated value presenting the data in a single bin. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands. Also shown are model calculations using the 'VGG' code (Regge type ansatz). Please note that the AUL amplitudes (LTSA) will only be released by the publication of the paper Nov 2, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-067. |
D. Mahon and M. Murray
prelim |
|
09-063 TRANSVERSE |
sin(3phi-phiS) amplitudes of the AUT asymmetry for semi-inclusive pions (+, -, or 0) and kaons (+ or -) as a function of x, z, or P_{h\perb}. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-062 TRANSVERSE |
The same as entry 09-063, but only for pions Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-061 TRANSVERSE |
The same as entry 09-063, but only for kaons Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-060 TRANSVERSE |
sin(phiS) amplitudes of the AUT asymmetry for semi-inclusive pions (+, -, or 0) and kaons (+ or -) as a function of x, z, or P_{h\perb}. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-059 TRANSVERSE |
The same as entry 09-060, but only for pions Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-058 TRANSVERSE |
The same as entry 09-060, but only for kaons Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-057 TRANSVERSE |
sin(phiS) amplitude of the AUT asymmetry for semi-inclusive pions (-) as a function of x, for 2 different Q2 ranges in each of the x-bins: one above and one below the average Q2 in the bin. The lower panel gives the respective average Q2. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-056 TRANSVERSE |
sin(2phi-phiS) amplitudes of the AUT asymmetry for semi-inclusive pions (+, -, or 0) and kaons (+ or -) as a function of x, z, or P_{h\perb}. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-055 TRANSVERSE |
The same as entry 09-056, but only for pions Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-054 TRANSVERSE |
The same as entry 09-056, but only for kaons Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-053 TRANSVERSE |
sin(2phi+phiS) amplitudes of the AUT asymmetry for semi-inclusive pions (+, -, or 0) and kaons (+ or -) as a function of x, z, or P_{h\perb}. The statistical uncertainties are indicated by the error bars, the systematic uncertainies by the error bands Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-052 TRANSVERSE |
The same as entry 09-053, but only for pions Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-051 TRANSVERSE |
The same as entry 09-053, but only for kaons Oct 20, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-063. |
M. Diefenthaler, A. Rostomyan, G. Schnell, M. Contalbrigo, L. Pappalardo
prelim |
|
09-050 TRANSVERSE sivers |
Sivers amplitudes for pions, charged kaons, and the pion-difference asymmetry in bins of x, z, and P_{h,perb}. The systematic uncertainty is given as a band at the bottom of each panel. In addition, there is a 7.3% scale uncertainty from the target-polarization measurement. Full 2002-2005 transverse data set Aug 4, 2009 *BW (eps) *BW (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-050a TRANSVERSE sivers |
Same as entry 09-050, but only for pions and in color for presentations Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-050b TRANSVERSE sivers |
Same as entry 09-050, but only for kaons and in color for presentations Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-050c TRANSVERSE sivers |
Same as entry 09-050, but only for the pion difference asymmetry (+ minus -) and in color for presentations Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-049a TRANSVERSE sivers |
Sivers amplitudes for positively charged pions as functions of z or P_{h,perb}, compared for two different ranges in Q2. The corresponding fraction of pions stemming from the decay of exclusive vector mesons is provided in the bottom panel (MC) Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-049b TRANSVERSE sivers |
As 09-049a, but for positively charged kaons Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-048a TRANSVERSE sivers |
Sivers amplitudes for positively charged pions as functions of x. The Q2 range for each bin was divided into the two regions above and below the average Q2 of each x-bin. In the bottom panel, the average Q2 values are given for the two Q2 ranges Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-048b TRANSVERSE sivers |
As 09-048a, but for positively charged kaons Aug 4, 2009 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-047 TRANSVERSE sivers |
Difference of Sivers amplitudes for positively charged pions and positively charged kaons as function of x for all Q2, and separated into the high- and low-Q2 regions as done for 09-048 Aug 4, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
M. Diefenthaler and L. Pappalardo
final |
|
09-046 VECTOR-MESONS spin transfer, rho |
The modulus of the helicity amplitude ratio U11/T00 for exclusive electroproduction of rho mesons, in bins of t' and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to this entry. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-045 VECTOR-MESONS spin transfer, rho |
The real part of the helicity amplitude ratio T11/T00 times Q for exclusive electroproduction of rho mesons, in bins of t' and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-044 VECTOR-MESONS spin transfer, rho |
The real part of the helicity amplitude ratio T01/T00 for exclusive electroproduction of rho mesons, in bins of t' and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-043 VECTOR-MESONS spin transfer, rho |
The imaginary part of the helicity amplitude ratio T11/T00 divided by Q for exclusive electroproduction of rho mesons, in bins of t' and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-042 VECTOR-MESONS spin transfer, rho |
The imaginary part of the helicity amplitude ratio T01/T00 times Q for exclusive electroproduction of rho mesons, in bins of t' and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-041 VECTOR-MESONS spin transfer, rho |
The modulus of the helicity amplitude ratio U11/T00 for exclusive electroproduction of rho mesons, in bins of Q2 and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-040 VECTOR-MESONS spin transfer, rho |
The real part of the helicity amplitude ratio T11/T00 for exclusive electroproduction of rho mesons, in bins of Q2 and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-039 VECTOR-MESONS spin transfer, rho |
The imaginary part of the helicity amplitude ratio T11/T00 for exclusive electroproduction of rho mesons, in bins of Q2 and separately for a proton and a deuteron target. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties Aug 4, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-046. |
S. Borissov, S. Manaenkov, B. Marianski
prelim |
|
09-038 G1 g2 |
The inclusive asymmetry A2 in bins of x-Bjorken. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties. Also included are data from the measurements of the E155, the E143 and the SMC collaborations Aug 3, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to this entry. |
A. Ivanilov, S. Korotkov
prelim |
|
09-037 G1 g2 |
The inclusive structure function g2 times x-Bjorken in bins of x-Bjorken. The inner error bars denote the statistical uncertainties, the outer error bars are the quadratic sum of the statistical und sytematic uncertainties. Also included are data from the measurements of the E155 and E143 collaborations Aug 3, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to entry 09-038. |
A. Ivanilov, S. Korotkov
prelim |
|
09-036a VECTOR-MESONS spin density matrix elements |
Q2 dependence of the longitudinal-to-transverse cross section ratio for exclusive rho0 production on the proton. R^{04} calculated from the SDME r^{04}_{00} according to Eq.69. HERMES proton data (filled squares) are compared to measurements of CLAS, Cornell, E665, H1, and ZEUS. The more recent CLAS data (small squares) are from a narrow bin in xB with approximately the same < xB > as the HERMES data, which are integrated over the xB acceptance. (See publication for references) Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-036b VECTOR-MESONS spin density matrix elements |
Q2 dependence of the longitudinal-to-transverse cross section ratio for exclusive rho0 production on the proton. $R^{04}$ for ZEUS (triangles) and R^{NPE} for HERMES (squares), fitted separately according to Eq.76. For all data points, total uncertainties are shown. Theoretical calculations of R0 = |T_{00}|^2/|T_{11}|^2 are shown as dashed line at W=5GeV; the uncertainties arising from the uncertainties in the parton distribution functions are shown as a shaded band. (See publication for references) Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-035a VECTOR-MESONS spin density matrix elements |
Q2 dependence of the longitudinal-to-transverse cross section ratio measured at HERMES. Proton results. Filled symbols represent the value of R^{04} calculated from r^{04}_{00} (Eq.69), open symbols correspond to the true value of R calculated according to Eqs.70,72, and crosses (diamonds) represent R^{NPE} Eq.75. Total uncertainties are shown, calculated by combining the statistical and systematic uncertainties in quadrature. The data points for R and R^{NPE} are presented with a small horizontal offset to improve their visibility Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-035b VECTOR-MESONS spin density matrix elements |
As entry 09-035a, but deuteron results Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-034 VECTOR-MESONS spin density matrix elements |
Ratios of certain helicity-flip amplitudes to the square root of the sum of all amplitudes squared: \tau_{01}, \tau_{10}, and \tau_{1-1}. HERMES results on proton (filled squares) and deuteron (filled circles) are calculated according to Eqs.59-61, while results from DESY, SLAC'79, SLAC'74, ZEUS BPS, ZEUS DIS and H1 are calculated according to Eqs.70,72. (See publication for references) For HERMES (other experiments) systematic uncertainties are combined in quadrature with (without) accounting for correlations between the SDMEs. The HERMES deuteron and SLAC'74 data points are presented with a small horizontal offset to improve their visibility Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-033 VECTOR-MESONS spin density matrix elements |
Average values of u1, u2 and u3 calculated according to Eqs.52-54 from HERMES proton (filled squares) and deuteron (filled circles). SDMEs are shown together with the values calculated from published SDMEs from DESY, SLAC'79, SLAC'74, ZEUS BPS, ZEUS DIS, and H1. (See publication for references) For HERMES (other experiments) systematic uncertainties are combined in quadrature with (without) accounting for correlations between the SDMEs. The HERMES deuteron and SLAC'74 data points are presented with a small horizontal offset to improve their visibility Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-032a VECTOR-MESONS spin density matrix elements |
The Q2 dependence of u1 = 1-r_{00}^{04} + 2 r_{1-1}^{04} - 2 r_{11}^{1} - 2 r_{1-1}^{1} for proton (filled squares) and deuteron (filled circles) data. The values of u1 for yields integrated over the range 1GeV2 < Q2 < 7GeV2 are shown as open symbols. The inner (outer) error bars represent the statistical (total) uncertainties Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-032b VECTOR-MESONS spin density matrix elements |
As entry 09-032a, but t' dependence Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-031 VECTOR-MESONS spin density matrix elements |
Q2 and t' dependences of the "Class E" SDMEs describing the interference of the double-helicity-flip transition gamma^*_{-T} -> rho0_{T} and the dominant transition gamma^*_T -> rho0T. Filled squares (circles) correspond to proton (deuteron) data. Total uncertainties are depicted, calculated as statistical and systematic uncertainties combined in quadrature Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-030 VECTOR-MESONS spin density matrix elements |
Q2 and t' dependences of the "Class D" SDMEs describing the interference of the helicity-flip transition gamma^*_L -> rho0T and the dominant transition gamma^*_T -> rho0T. Filled squares (circles) correspond to proton (deuteron) data. Total uncertainties are depicted, calculated as statistical and systematic uncertainties combined in quadrature Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-029 VECTOR-MESONS spin density matrix elements |
Q2 and t' dependence of the "Class C" SDMEs describing the interference of the helicity-flip transition gamma^*_T -> rho0L and one of the dominant helicity-conserving transition. Filled squares (circles) correspond to proton (deuteron) data. Total uncertainties are depicted, calculated as statistical and systematic uncertainties combined in quadrature Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-028 VECTOR-MESONS spin density matrix elements |
The Q2 dependence of the phase difference \delta between T_{11} and T_{00} amplitudes calculated according to Eq.50 for the proton (filled squares) and deuteron (filled circles) data. The values of \delta, for yields integrated over the range 1GeV2 < Q2 < 7 GeV2, are shown as open symbols. The inner (outer) bars represent the statistical (total) uncertainty Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-027 VECTOR-MESONS spin density matrix elements |
Q2 and t' dependences of the "Class B" SDMEs describing the interference of the dominant transitions gamma^*_L -> rho0L and gamma^*_T -> rho0T. Filled squares (circles) correspond to proton (deuteron) data. Total uncertainties are depicted, calculated as statistical and systematic uncertainties combined in quadrature Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-026 VECTOR-MESONS spin density matrix elements |
Q2 and t' dependences of the "Class A" SDMEs describing the dominant transitions gamma^*_L -> rho0L and gamma^*_T -> rho0T. Filled squares (circles) correspond to proton (deuteron) data. Total uncertainties are depicted, calculated as statistical and systematic uncertainties combined in quadrature. Deuterium data points are presented with a small horizontal offset to improve their visibility Jun 29, 2009 *BW (eps) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-025. |
A. Borissov
final |
|
09-025 VECTOR-MESONS spin density matrix elements |
The 23 SDMEs extracted from rho0 data: proton (squares) and deuteron (circles) in the entire HERMES kinematics with < xB>=0.08, < Q2>= 1.95GeV2, <-t'>=0.13GeV2. The SDMEs are multiplied by prefactors in order to represent the normalized leading contribution of the corresponding amplitude. The inner error bars represent the statistical uncertainties, while the outer ones indicate the statistical and systematic uncertainties added in quadrature. SDMEs measured with unpolarized (polarized) beam are displayed in the unshaded (shaded) areas. The vertical dashed line at zero is indicated for SDMEs expected to be zero under the hypothesis of SCHC Jun 29, 2009 *BW (eps) *BW (pdf) *Data INFO: The data values are contained in the file attached to this entry. |
A. Borissov
final |
|
09-024 VECTOR-MESONS spin density matrix elements |
Shape comparison of the distributions in W, Q2, t' and P_{\pi^+}, the momentum of the pi^+ from rho0 decay in the laboratory system, for the hydrogen data sample (squares). The shaded areas show rhoMC results using the extracted 23 SDMEs as input for the simulation, normalized to the data. Background has been subtracted from the data Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-023a VECTOR-MESONS spin density matrix elements |
Angular distributions with common arbitrary normalization for rho0 meson production and decay. Data points represent the positive helicity sample of the proton data. The dotted lines represent isotropic input Monte Carlo distributions as modified by the HERMES acceptance, while the dashed lines are the results of the 23-parameter fit. Here 16 bins are chosen for a more detailed comparison. The data correspond to the full kinematic region of the analysis Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-023b VECTOR-MESONS spin density matrix elements |
As entry 09-023a, but for deuteron data Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-022 VECTOR-MESONS spin density matrix elements |
Distribution of \Delta E for the 1996-2005 hydrogen data sample shown for four intervals in t' after application of all event selection requirements, except the one for \Delta E. The shaded areas represent the SIDIS background calculated by PYTHIA, normalized to the data in the region 2GeV < \Delta E < 20GeV Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-021 VECTOR-MESONS spin density matrix elements |
The distribution of rho0 mesons in \Delta E, and t' from the 1996-2005 hydrogen data sample in the range 1GeV2 < Q2 < 7GeV2 Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-020 VECTOR-MESONS spin density matrix elements |
Two-pion invariant mass distribution in the spectrometer acceptance, fitted with a skewed Breit-Wigner function (solid line). The dotted line represents a constant background contribution Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-019 VECTOR-MESONS spin density matrix elements |
Definition of angles in the process gamma^* N -> rho0 N' -> pi^+ pi^- N'. Here \Phi is the angle between the rho0 production plane and the lepton scattering plane in the "hadronic" center-of-mass system of virtual photon and target nucleon. \Theta and \phi are polar and azimuthal angles of the decay \pi^+ in the vector meson rest frame Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-018 VECTOR-MESONS spin density matrix elements |
Examples of a) a two-gluon exchange diagram and b) a quark-exchange diagram, shown for the lowest order in the strong coupling constant alphas Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-017 VECTOR-MESONS spin density matrix elements |
Feynman diagram of a generic t-channel exchange process for gamma^* N -> rho0 N' Jun 29, 2009 *BW (eps) *BW (pdf) |
A. Borissov
final |
|
09-016 VECTOR-MESONS spin density matrix elements |
Transverse spin density matrix elements (SDMEs) for exclusive rho production on a transversely polarized hydrogen target. The inner error bars denote the statistical uncertainties, the outer error bars the combined (statistical and systematic) uncertainties May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
A. Rostomyan, H. Blok, J. Dreschler
prelim |
|
09-015 VECTOR-MESONS asymmetry, omega |
Moments of the azimuthal target-spin asymmetry in exclusive electroproduction of omega mesons on a transversely polarized hydrogen target, in bins of -t', x-Bjorken and Q2. The values integrated over the covered kinematic region are also given May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to this entry. |
B. Marianski, S. Borissov, S. Manaenkov, W.-D. Nowak
prelim |
|
09-014 F2 f2fit |
Inclusive polarization-independent structure function F2 of the proton versus Q2, for different bins in x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS, JLab, HERA and SLAC. All x-ranges. Also indicated in the figure are the SMC fit and the GD07 (Gabbert De Nardo) fit. Both fits do not include the HERMES data points May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to this entry. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-013 F2 f2fit |
Inclusive polarization-independent structure function F2 of the proton versus Q2, for different bins in x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS, JLab, HERA and SLAC. The average x-Bjorken ranges from 0.008 to 0.040 in this figure. Also indicated in the figure are the SMC fit and the GD07 (Gabbert De Nardo) fit. Both fits do not include the HERMES data points May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-012 F2 f2fit |
Inclusive polarization-independent structure function F2 of the proton versus Q2, for different bins in x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS, JLab, HERA and SLAC. The average x-Bjorken ranges from 0.049 to 0.127 in this figure. Also indicated in the figure are the SMC fit and the GD07 (Gabbert De Nardo) fit. Both fits do not include the HERMES data points May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-011 F2 f2fit |
Inclusive polarization-independent structure function F2 of the proton versus Q2, for different bins in x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS, JLab, HERA and SLAC. The average x-Bjorken ranges from 0.166 to 0.679 in this figure. Also indicated in the figure are the SMC fit and the GD07 (Gabbert De Nardo) fit. Both fits do not include the HERMES data points May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-010 F2 |
Inclusive polarization-independent structure function F2 of the deuteron versus Q2, for different bins in x-Bjorken. Otherwise as data base entry 09-014 May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-009 F2 |
Inclusive polarization-independent structure function F2 of the deuteron versus Q2, for different bins in x-Bjorken. Otherwise as data base entry 09-013 May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-008 F2 |
Inclusive polarization-independent structure function F2 of the deuteron versus Q2, for different bins in x-Bjorken. Otherwise as data base entry 09-012 May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-007 F2 |
Inclusive polarization-independent structure function F2 of the deuteron versus Q2, for different bins in x-Bjorken. Otherwise as data base entry 09-011 May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-006 F2 |
Inclusive cross-section on a proton target versus W2, for different bins in Q2. The HERMES data are compared to measurements from NMC, BCDMS, JLab, HERA and SLAC. Also indicated in the figure are the ALLM97 fit and the GD07 (Gabbert De Nardo) fit. Both fits do not include the HERMES data points May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-005 F2 f2ratio |
Inclusive cross-section ratio proton/deuteron versus Q2, for different bins in x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS, JLab and SLAC May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-004 F2 f2ratio |
Inclusive cross-section ratio proton/deuteron versus x-Bjorken. The HERMES data are compared to measurements from NMC, BCDMS and SLAC May 14, 2009 *Colour (eps) *Colour (pdf) INFO: The data values are contained in the file attached to entry 09-014. |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-003 F2 |
2-dimensional kinematic plane in x and Q2 showing the binning used for the inclusive F2 analysis. The green lines indicate the borders of the available phase space defined by the imposed cuts or the geometrical acceptance May 14, 2009 *Colour (eps) *Colour (pdf) |
D. Gabbert, E. Aschenauer, L. De Nardo
prelim |
|
09-002 LAMBDA-POL transverse |
Dependence of the transverse Lambda polarization on the ratio A/Z (atomic mass number / number of protons) of the target. 1996-2005 data. All zeta values. The inner error bars indicate the statistical uncertainty, the total error bars the total uncertainty (stat and sys) Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to this entry. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
|
09-002a LAMBDA-POL transverse |
As entry 08-068, but for zeta>0.25 Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-002. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
|
09-002b LAMBDA-POL transverse |
As entry 08-068, but for zeta<0.25 Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-002. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
|
09-001 LAMBDA-POL transverse |
Dependence of the transverse Lambda polarization on the atomic mass number A of the target. 1996-2005 data. All zeta values. The inner error bars indicate the statistical uncertainty, the total error bars the total uncertainty (stat and sys) Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-002. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
|
09-001a LAMBDA-POL transverse |
As entry 08-067, but for zeta>0.25 Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-002. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
|
09-001b LAMBDA-POL transverse |
As entry 08-067, but for zeta<0.25 Mar 23, 2009 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: The data values are contained in the file attached to entry 09-002. |
Y. Naryshkin, D.Veretennikov, S. Belostotski
prelim |
| Year: 2008 | ||
| Back to top | ||
|
08-066 DELTA-Q |
The semi-inclusive double-spin asymmetry A1 for charged pions on a longitudinally polarized hydrogen target and for charged kaons on a longitudinally polarized hydrogen and deuterium target vs. the transverse momentum of the produced hadron pT. The dependencies are shown for different ranges in x-Bjorken (x). To each A1(x,pt), a constant fit of the form A1(x,pT) = a + b x is applied. The deuterium results have been updated on Feb 11, 2009 after the missing polarization correction had been applied. Feb 11, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file attached to this entry. The resulting chi^2 values of the fit are contained in the data file of record 08-065. |
J. Rubin and P. Kravchenko
prelim |
|
08-065 DELTA-Q |
The semi-inclusive double-spin asymmetry A1 for charged pions on a longitudinally polarized hydrogen target and for charged kaons on a longitudinally polarized hydrogen and deuterium target vs. the transverse momentum of the produced hadron pT. The dependencies are shown for different ranges in x-Bjorken (x). To each A1(x,pt), a linear fit of the form A1(x,pT) = a + b x + c pT is applied. The deuterium results have been updated on Feb 11, 2009 after the missing polarization correction had been applied. Feb 11, 2009 *Colour (eps) *Colour (pdf) INFO: The resulting chi^2 values of the fit are contained in the data file attached to this entry. The data points are contained in the data file of record 08-066. |
J. Rubin and P. Kravchenko
prelim |
|
08-064 TRANSVERSE |
The Sivers moment in bins of z and in bins of pt, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: All 2-dimensional Sivers data points are contained in the data file attached to this entry. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-063 TRANSVERSE |
The Sivers moment in bins of x and in bins of z, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file of record 08-064. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-062 TRANSVERSE |
The Sivers moment in bins of x and in bins of pt, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file of record 08-064. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-061 TRANSVERSE |
The Collins moment in bins of z and in bins of pt, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: All 2-dimensional Collins data points are contained in the data file attached to this entry. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-060 TRANSVERSE |
The Collins moment in bins of x and in bins of z, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file of record 08-061. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-059 TRANSVERSE |
The Collins moment in bins of x and in bins of pt, separately for positively and negatively charged pions, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panels) Oct 21, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the data file of record 08-061. |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-058 TRANSVERSE |
The difference of the Sivers moment for positively and negatively charged pions in bins of x, z and pt, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panel) Oct 21, 2008 *Colour (eps) *Colour (pdf) |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-057 TRANSVERSE |
The difference of the Collins moment for positively and negatively charged pions in bins of x, z and pt, for all target transversely polarized data 2002-2005. The error bands display the respective total systematic uncertainty apart from the scale uncertainty due to the uncertainty on the target polarization (given in the panel) Oct 21, 2008 *Colour (eps) *Colour (pdf) |
L. Pappalardo and M. Diefenthaler
prelim |
|
08-056 LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda and Anti-Lambda Production in bins of x-Feynman from all 1996-2005 data. The inner part of the error bars attached to the data points indicates the statistical uncertainty, the total error bars display the total uncertainty (statistical and systematic) Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the ascii file attached to this entry. |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-055a LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda Production in bins of x-Feynman from all 1996-2005 data, for Lambda.. The HERMES data points are compared to world data (COMPASS, E665, NOMAD) Oct 21, 2009 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-055b LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda Production in bins of x-Feynman from all 1996-2005 data, for LambdaBar.. The HERMES data points are compared to world data (COMPASS, E665, NOMAD) Oct 21, 2009 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-054 LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda and Anti-Lambda Production in bins of x-Bjorken from all 1996-2005 data. The inner part of the error bars attached to the data points indicates the statistical uncertainty, the total error bars display the total uncertainty (statistical and systematic) Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the ascii file attached to entry 08-056. |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-054a LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda Production in bins of x-Bjorken from all 1996-2005 data. The HERMES data are compared to COMPASS data Oct 17, 2008 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-054b LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive LambdaBar Production in bins of x-Bjorken from all 1996-2005 data. The HERMES data are compared to COMPASS data Oct 17, 2008 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-053 LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda and Anti-Lambda Production in bins of Q2 from all 1996-2005 data. The closed symbols denote bins with Q2>1, the open symbol the bin with Q2<1. The inner part of the error bars attached to the data points indicates the statistical uncertainty, the total error bars display the total uncertainty (statistical and systematic) Oct 17, 2008 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-052 LAMBDA-POL longitudinal |
The Longitudinal Spin Transfer in Semi-Inclusive Lambda and Anti-Lambda Production in bins of z from all 1996-2005 data. The inner part of the error bars attached to the data points indicates the statistical uncertainty, the total error bars display the total uncertainty (statistical and systematic) Oct 17, 2008 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Naryshkin
prelim |
|
08-051 AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a hydrogen target in bins of x, y, z and Ptperb. Two rows of panels, each one for the cos1phi and the cos2phi moment. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: See records 08-051a and 08-051b for data tables. The data table attached to this entry contains the average z in each x-bin for both hydrogen and deuterium targets, both negatively and positively charged hadrons. |
F. Giordano and R. Lamb
prelim |
|
08-051a AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a hydrogen target in bins of x, y, z and Ptperb. Only the cos1phi moment is shown. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-051. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-051b AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a hydrogen target in bins of x, y, z and Ptperb. Only the cos2phi moment is shown. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-051. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-050 AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a deuterium target in bins of x, y, z and Ptperb. Two rows of panels, each one for the cos1phi and the cos2phi moment. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: See records 08-051a and 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-050a AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a deuterium target in bins of x, y, z and Ptperb. Only the cos1phi moment is shown. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-050. See record 08-051a for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-050b AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section on a deuterium target in bins of x, y, z and Ptperb. Only the cos2phi moment is shown. The results for positively and negatively charged hadrons are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-050. See record 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-049 AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for positively charged hadrons in bins of x, y, z and Ptperb. Two rows of panels, each one for the cos1phi and the cos2phi moment. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: See records 08-051a and 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-049a AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for positively charged hadrons in bins of x, y, z and Ptperb. Only the cosphi moment is shown. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-049. See record 08-051a for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-049b AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for positively charged hadrons in bins of x, y, z and Ptperb. Only the cos2phi moment is shown. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-049. See record 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-048 AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for negatively charged hadrons in bins of x, y, z and Ptperb. Two rows of panels, each one for the cos1phi and the cos2phi moment. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: See records 08-051a and 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-048a AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for negatively charged hadrons in bins of x, y, z and Ptperb. Only the cosphi moment is shown. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-048. See record 08-051a for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-048b AZIMUTHAL |
The Azimuthal Asymmetries in the spin-independent semi-inclusive cross-section for negatively charged hadrons in bins of x, y, z and Ptperb. Only the cos2phi moment is shown. Results from a hydrogen and from a deuterium target are shown in the same panel. The error bands display the respective total systematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. This plot shows a subsample of 08-048. See record 08-051b for data tables. For the data file containing the average z per x-bin, please see entry 08-051. |
F. Giordano and R. Lamb
prelim |
|
08-047 TRANSVERSE inclusive |
The transverse single-spin asymmetry in inclusive DIS for an electron beam. The three lower panels show the average Q2, the acceptance factor and the fractional contribution of elastic processes in each x-bin. The closed symbols comprise data with Q2>1, the open symbols with Q2<1. The error bands display the total sytematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) |
L. De Nardo and A. Lopez Ruiz
prelim |
|
08-047b TRANSVERSE inclusive |
Same as 08-047, but without the supporting kinematic panels Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. |
L. De Nardo and A. Lopez Ruiz
prelim |
|
08-046 TRANSVERSE inclusive |
The transverse single-spin asymmetry in inclusive DIS for a positron beam. The three lower panels show the average Q2, the acceptance factor and the fractional contribution of elastic processes in each x-bin. The closed symbols comprise data with Q2>1, the open symbols with Q2<1. The error bands display the total sytematic uncertainty Oct 17, 2008 *Colour (eps) *Colour (pdf) |
L. De Nardo and A. Lopez Ruiz
prelim |
|
08-046b TRANSVERSE inclusive |
Same as 08-046, but without the supporting kinematic panels Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot. |
L. De Nardo and A. Lopez Ruiz
prelim |
|
08-045 TRANSVERSE inclusive |
The average Q2, the acceptance factor and the fractional contribution of elastic processes in each x-bin (electron and positron beam). The closed symbols comprise data with Q2>1, the open symbols with Q2<1 Oct 17, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot for 08-046b and 08-047b.. |
L. De Nardo and A. Lopez Ruiz
prelim |
|
08-044 DVCS deuterium |
The asymmetry amplitudes originating from the interference term extracted from all unpolarized deuterium data (1996-2005). The error bars (yellow bands) represent the statistical (systematic) uncertainties. The curves are predictions of a double-distribution model (blue and hatched bands indicating the range of varied parameters) or a polynomiality based model (black lines). The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Update after bugfix in VGG (c0) calculations. Dual curves removed. |
H. Marukyan and G. Hill
prelim |
|
08-044b DVCS deuterium |
The asymmetry amplitudes originating from the interference term extracted from all unpolarized deuterium data (1996-2005). The error bars (yellow bands) represent the statistical (systematic) uncertainties. The plot includes a comparison of a model with smearing & acceptance and a model at mean kinematics, of which the difference has been assigned as sytematic uncertainty. WARNING: the chosen model variant is considered to describe the HERMES data, but it is known to have a theoretical calculation error. This does however not affect this study, but only the interpretation in terms of GPDs. The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive Plot. Reference to Dual curves removed. |
H. Marukyan and G. Hill
prelim |
|
08-043 DVCS deuterium |
The pure DVCS squared asymmetry amplitudes extracted from all unpolarized deuterium data (1996-2005). The error bars (bands) represent the statistical (systematic) uncertainties. The curves are predictions of a double-distribution model (blue and hatched bands indicating the range of varied parameters) or a polynomiality based model (black lines). The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Update after bugfix in VGG (c0) calculations. Dual curves removed. See record 08-044 for data tables. |
H. Marukyan and G. Hill
prelim |
|
08-043b DVCS deuterium |
The pure DVCS squared asymmetry amplitudes extracted from all unpolarized deuterium data (1996-2005). The error bars (bands) represent the statistical (systematic) uncertainties. The plot includes a comparison of a model with smearing & acceptance and a model at mean kinematics, of which the difference has been assigned as sytematic uncertainty. WARNING: the chosen model variant is considered to describe the HERMES data, but it is known to have a theoretical calculation error. This does however not affect this study, but only the interpretation in terms of GPDs. The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive Plot. Reference to Dual curves removed. |
H. Marukyan and G. Hill
prelim |
|
08-042 DVCS deuterium |
The charge asymmetry amplitudes extracted from all unpolarized deuterium data (1996-2005). The error bars (bands) represent the statistical (systematic) uncertainties. The curves are predictions of a double-distribution model (blue and hatched bands indicating the range of varied parameters) or a polynomiality based model (black lines). The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Update after bugfix in VGG (c0) calculations. Dual curves removed. See record 08-044 for data tables. |
H. Marukyan and G. Hill
prelim |
|
08-042b DVCS deuterium |
The charge asymmetry amplitudes extracted from all unpolarized deuterium data (1996-2005). The error bars (bands) represent the statistical (systematic) uncertainties. The plot includes a comparison of a model with smearing & acceptance and a model at mean kinematics, of which the difference has been assigned as sytematic uncertainty. WARNING: the chosen model variant is considered to describe the HERMES data, but it is known to have a theoretical calculation error. This does however not affect this study, but only the interpretation in terms of GPDs. The lowest panel shows the fractions of associated and coherent production, respectively (the first one being included only in the data but not in the MC used for the systematic studies) Nov 28, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive Plot. Reference to Dual curves removed. |
H. Marukyan and G. Hill
prelim |
|
08-041 DVCS proton, deuterium |
The asymmetry amplitudes originating from the interference term extracted from all data (1996-2005), comparing proton and unpolarized deuteron data. The error bars (bands) represent the statistical (systematic) uncertainties Aug 5, 2008 *Colour (eps) *Colour (pdf) |
H. Marukyan and G. Hill
prelim |
|
08-040 DVCS proton, deuterium |
The pure DVCS squared asymmetry amplitudes extracted from all data (1996-2005), comparing proton and unpolarized deuteron data. The error bars (bands) represent the statistical (systematic) uncertainties Aug 5, 2008 *Colour (eps) *Colour (pdf) INFO: Updated Dec 22, 2008: proton data points were missing in the 'overall' case. |
H. Marukyan and G. Hill
prelim |
|
08-039 DVCS proton, deuterium |
The charge asymmetry amplitudes extracted from all data (1996-2005), comparing proton and unpolarized deuteron data. The error bars (bands) represent the statistical (systematic) uncertainties Aug 5, 2008 *Colour (eps) *Colour (pdf) |
H. Marukyan and G. Hill
prelim |
|
08-024 DELTA-Q delta-s |
Non strange and strange quark helicity distributions at Q02=2.5 GeV2, as a function of Bjorken x. The curves are the LO results from Leader et al. from their analysis of world data Apr 4, 2008 *Colour (eps) *Colour (pdf) *Data |
H. Jackson
final |
|
08-023 DELTA-Q delta-s |
Lepton-nucleon polarized cross section asymmetries for inclusive and seminclusive DIS by a deuteron target as a function of Bjorken x, for identified charged kaons Apr 4, 2008 *Colour (eps) *Colour (pdf) |
H. Jackson
final |
|
08-022 DELTA-Q delta-s |
The strange parton distribution from the measured HERMES multiplicity for charged kaons evolved at Q02=2.5 GeV2 Apr 4, 2008 *Colour (eps) *Colour (pdf) *Data |
H. Jackson
final |
|
08-021 DELTA-Q delta-s |
The strange fragmentation function product obtained from the measured HERMES multiplicity for charged kaons at the average Q2 for each bin Apr 4, 2008 *Colour (eps) *Colour (pdf) |
H. Jackson
final |
|
08-020 DELTA-Q delta-s |
The multiplicity corrected to 4pi of charged kaons in seminclusive DIS from a deuterium target, as a function of Bjorken x. The average Q2 for each bin are shown in the lower panel Apr 4, 2008 *Colour (eps) *Colour (pdf) |
H. Jackson
final |
|
08-019 TRANSVERSE 2pion |
The top panels show the values of the amplitudes as a function of Mxx, x and z for Monte Carlo data extracted both in 4pi and experimental acceptance. The bottom panels show the average values of the variables that were integrated over Apr 4, 2008 *Colour (eps) *Colour (pdf) |
G. Schnell
final |
|
08-018 TRANSVERSE 2pion |
Yield distribution in the invariant mass of the pi+pi- pairs for the experimental data compared to a PHYTHIA 6 Monte Carlo simulation Apr 4, 2008 *BW (eps) *BW (pdf) |
G. Schnell
final |
|
08-017 TRANSVERSE 2pion |
The top panels show the values of the amplitudes as a function of Mxx, x and z. The bottom panels show the average values of the variables that were integrated over Apr 4, 2008 *Colour *Colour (eps) *Colour (pdf) |
G. Schnell
final |
|
08-016 TRANSVERSE 2pion |
Depiction of the azimuthal angles Apr 4, 2008 *Colour (eps) *Colour (pdf) |
G. Schnell
final |
|
08-015 DVCS |
Model-dependent constraint on u-quark total angular momentum Ju vs d-quark total angular momentum Jd. WARNING: this plot is NOT supposed to be shown anymore at conferences. The Dual model is known to have a theoretical theoretical calculation error which makes the interpretation invalid. The remaining models on the plot (VGG) don't describe all Hermes data. Mar 13, 2008 *Colour (eps) *Colour (pdf) |
E. Avetisyan
final |
|
08-014 DVCS |
same as 08-011 (top rows) with curves based on calculations using Regge-inspired form of the t-dependence in the dual-parameterisation GPD model. WARNING: this plot is NOT supposed to be shown anymore at conferences. The Dual model is known to have a theoretical theoretical calculation error which makes the interpretation invalid. Mar 13, 2008 *Colour (eps) *Colour (pdf) |
E. Avetisyan
final |
|
08-013 DVCS |
same as 08-010 (top row) with curves based on dual-parameterisation GPD model. WARNING: this plot is NOT supposed to be shown anymore at conferences. The Dual model is known to have a theoretical theoretical calculation error which makes the interpretation invalid. Mar 13, 2008 *Colour (eps) *Colour (pdf) |
E. Avetisyan
final |
|
08-012 DVCS |
Asymmetry amplitudes that are expected to be suppressed Mar 13, 2008 *Colour (eps) *Colour (pdf) |
E. Avetisyan
final |
|
08-011 DVCS |
Asymmetry amplitudes describing the dependence of the squared DVCS amplitudes and the interference term on the transverse target polarization, for the exclusive sample Mar 13, 2008 *Colour (eps) *Colour (pdf) *Data |
E. Avetisyan
final |
|
08-010 DVCS |
Asymmetry amplitudes describing the dependence of the interference term on the beam charge AC for the exclusive sample Mar 13, 2008 *Colour (eps) *Colour (pdf) *Data |
E. Avetisyan
final |
|
08-009 DVCS |
Distributions in squared missing-mass from data with positron and electron beams and from Monte Carlo simulations Mar 13, 2008 *Colour (eps) *Colour (pdf) |
E. Avetisyan
final |
|
08-008 DVCS |
Momenta and azimuthal angles for exclusive electroproduction of photons in the target rest frame Mar 13, 2008 *BW (eps) *BW (pdf) |
E. Avetisyan
final |
|
08-007 DVCS |
Leading order diagrams for DVCS and Bethe-Heitler processes Mar 13, 2008 *BW (eps) *BW (pdf) |
E. Avetisyan
final |
|
08-006a LAMBDA-POL transverse |
Transverse polarization as a function of pT for hyperons for zeta>0.25 Mar 13, 2008 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
D. Veretennikov and Y. Narishkin
final |
|
08-006b LAMBDA-POL transverse |
Transverse polarization as a function of pT for hyperons for zeta<0.25 Mar 13, 2008 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
D. Veretennikov and Y. Narishkin
final |
|
08-005 LAMBDA-POL transverse |
Transverse polarization (upper panel) and mean pT (lower panel) Mar 13, 2008 *BW (eps) *BW (pdf) |
D. Veretennikov and Y. Narishkin
final |
|
08-004 LAMBDA-POL transverse |
Ratio of Lambda to Lambdabar yields versus light-cone fraction after background subtraction Mar 13, 2008 *BW (eps) *BW (pdf) *Data |
D. Veretennikov and Y. Narishkin
final |
|
08-003 LAMBDA-POL transverse |
Correlation between xB and the light cone fraction Mar 13, 2008 *BW (eps) *BW (pdf) |
D. Veretennikov and Y. Narishkin
final |
|
08-002 LAMBDA-POL transverse |
Invariant mass distributions for Lambda and antiLambda events Mar 13, 2008 *BW (eps) *BW (pdf) |
D. Veretennikov and Y. Narishkin
final |
|
08-001 LAMBDA-POL transverse |
Schematic diagram of inclusive Lambda production and decay Mar 13, 2008 *Colour (eps) *Colour (pdf) |
D. Veretennikov and Y. Narishkin
final |
| Year: 2007 | ||
| Back to top | ||
|
07-081 BEC |
Results for Goldhaber radius rG obtained in e^+e^- experiments Mar 18, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot |
G. Gapienko and V. Korotkov
prelim |
|
07-080 BEC |
Results for chaoticity parameter lambda obtained in e^+e^- experiments Mar 18, 2008 *Colour (eps) *Colour (pdf) INFO: Supportive plot |
G. Gapienko and V. Korotkov
prelim |
|
07-079 BEC |
Results for Goldhaber radius rG obtained in lN interactions. The HERMES points are from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-078 BEC |
Results for chaoticity parameter lambda obtained in lN interactions. The HERMES points are from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-077 BEC |
W-dependence of the BEC parameter rG from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-076 BEC |
W-dependence of the BEC parameter lambda from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-075 BEC |
A-dependence of the BEC parameters rG from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-074 BEC |
A-dependence of the BEC paramenter lambda from hydrogen target Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-073 BEC |
T-dependence of the correlation function with the method of event mixing (MEM) Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-072 BEC |
T-dependence of the correlation funtion with the method of unlike-sign hadron pairs Mar 18, 2008 *Colour (eps) *Colour (pdf) |
G. Gapienko and V. Korotkov
prelim |
|
07-071 VECTOR-MESONS spin density matrix elements |
The longitudinal to transverse cross section ratio of phi leptoproduction for proton and deuteron 1996-200 data in comparison with world data Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-070 VECTOR-MESONS spin density matrix elements |
The longitudinal to transverse cross section ratio of phi leptoproduction for proton and deuteron 1996-200 data Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-069 VECTOR-MESONS spin density matrix elements |
t'-dependence of the combinations of SDMEs expected to be the zero in case of NPE dominance Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-068 VECTOR-MESONS spin density matrix elements |
Q2 dependence of the combinations of SDMEs expected to be the zero in case on NPE dominance Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-067 VECTOR-MESONS spin density matrix elements |
t'-dependence of the combinations of SDMEs expected to be the same in case of SCHC approximation Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-066 VECTOR-MESONS spin density matrix elements |
Q2 dependence of the combinations of SDMEs expected to be the same in case of SCHC approximation Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-065 VECTOR-MESONS spin density matrix elements |
t' dependence of SDMEs for phi Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-064 VECTOR-MESONS spin density matrix elements |
Q2 dependence of SDMEs for phi Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-063 VECTOR-MESONS spin density matrix elements |
SDMEs for rho from proton and for phi from proton and deuteron Sep 2, 2009 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-062 VECTOR-MESONS spin density matrix elements |
SDMEs for phi from proton and deuteron extracted at Q2=2.6 GeV2 Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-061 VECTOR-MESONS spin density matrix elements |
SDMEs for phi from proton and deuteron extracted at Q2=1.9 GeV2 Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-060 VECTOR-MESONS spin density matrix elements |
SDMEs for phi from proton and also for deuteron extracted at Q2=1.9 GeV2 Mar 14, 2008 *Colour (eps) *Colour (pdf) |
A. Borissov
prelim |
|
07-059 EXCLUSIVE phi |
Delta E distribution Mar 13, 2008 *Colour (eps) *Colour (pdf) INFO: supportive plot |
S. Gliske
prelim |
|
07-058 EXCLUSIVE phi |
MKK distribution Mar 13, 2008 *Colour (eps) *Colour (pdf) INFO: supportive plot |
S. Gliske
prelim |
|
07-057 EXCLUSIVE phi |
AUT 2002-2005 with L-T separation Mar 13, 2008 *Colour (eps) *Colour (pdf) |
S. Gliske
prelim |
|
07-054 EXCLUSIVE pion |
Cross section for exclusive pi+ production by virtual photons as a function of Q2 for three xB bins and integrated over t' Mar 12, 2008 *Colour (eps) *Colour (pdf) *Data |
C. Hadjidakis and D. Hasch
final |
|
07-053 EXCLUSIVE pion |
Differential cross section for exclusive pi+ production by virtual photons as a function of -t' for four Q2 bins Mar 12, 2008 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
C. Hadjidakis and D. Hasch
final |
|
07-052 EXCLUSIVE pion |
Distributions of exclusive pi+ events within the HERMES acceptance as a function of Q2, xB, -t' and phi for data compared with an exclusive Monte Carlo simulation based on a GPD parametrization (Vanderhaegen, Guichon, Guidal) Mar 12, 2008 *BW (eps) *BW (pdf) |
C. Hadjidakis and D. Hasch
final |
|
07-051 EXCLUSIVE pion |
Squared missing mass dependence of the normalized-yield difference Npi+ - Npi- for data and PHYTHIA Monte Carlo (upper panel) and squared missing mass dependence of the normalized-yield after background subtraction procedure Mar 12, 2008 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
C. Hadjidakis and D. Hasch
final |
|
07-050 EXCLUSIVE pion |
Leading-order (left panel) and soft-overlap (right panel) diagram for exclusive pi+ electroproduction amplitude Mar 12, 2008 *BW (eps) *BW (pdf) |
C. Hadjidakis and D. Hasch
final |
|
07-049 LAMBDA-POL longitudinal |
World data on the Spin transfer KLL (HERMES, E704 and STAR) Oct 21, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the file attached to entry 07-046b. |
D. Veretennikov and Y. Narishkin
prelim |
|
07-048 LAMBDA-POL longitudinal |
Spin transfer KLL HERMES and E704 data Mar 12, 2008 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the file attached to entry 07-046b. |
D. Veretennikov and Y. Narishkin
prelim |
|
07-046b LAMBDA-POL longitudinal |
pt dependence of KLL for Lambda and Lambdabar Oct 21, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the ascii file attached to this entry. |
D. Veretennikov and Y. Narishkin
prelim |
|
07-044b LAMBDA-POL longitudinal |
t dependence of KLL for Lambda and Lambdabar Oct 21, 2009 *Colour (eps) *Colour (pdf) INFO: The data points are contained in the file attached to entry 07-046b. |
D. Veretennikov and Y. Narishkin
prelim |
|
07-043 TRANSVERSE |
Collins moments of AUT for pi+ and pi- production overlaid with model calculation of Schweitzer et al (hep-ph/0603054) Feb 7, 2008 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-040 TRANSVERSE |
Collins moments of AUT for pi+, pi-, and pi0 production (overlaid) from the full 2002-2005 data Feb 7, 2008 *Colour (eps) *Colour (pdf) INFO: See records 07-008 and 07-009 for data tables. |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-039 TRANSVERSE |
Collins moments of AUT for pi+, pi-, and pi0 production (in separate panels) from the full 2002-2005 data Feb 7, 2008 *Colour (eps) *Colour (pdf) INFO: See records 07-008 and 07-009 for data tables. |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-038 PR-PLOT |
Average beam polarisation per fill for 2004-2007 2007 *Colour *Colour (eps) *Colour (pdf) |
E.C. Aschenauer
final |
|
07-037 HADRON-ATTENUATION |
Alpha parameter obtained from a fit to the A-dependence of charged pi, K, and p production from four heavy targets, as a function of nu and z May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-036 HADRON-ATTENUATION |
Alpha and Beta parameters obtained from a fit to the A-dependence of charged-pion (combined) production from four heavy targets, as a function of Lc May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-035 HADRON-ATTENUATION |
Alpha parameter obtained from a fit to the A-dependence of charged-pion (combined) production from four heavy targets, in nu slices and as a function of z May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-034 HADRON-ATTENUATION |
Multiplicity ratio RAh for charged pions (combined) produced from four heavy targets, in nu slices as a function of Lc May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-033 HADRON-ATTENUATION |
Multiplicity ratio RAh for charged pions (combined) produced from four heavy targets, in pt2 slices as a function of nu, z, and Q2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-032 HADRON-ATTENUATION |
Multiplicity ratio RAh for charged pions (combined) produced from four heavy targets, in nu slices as a function of z, Q2, and pt2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-031 HADRON-ATTENUATION |
Multiplicity ratio RAh for charged pions (combined) produced from four heavy targets, in z slices as a function of nu, Q2, and pt2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-030 HADRON-ATTENUATION |
Multiplicity ratio RAh for pi0 produced from four heavy targets, as a function of nu, z, and Q2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-029 HADRON-ATTENUATION |
Multiplicity ratio RAh for charged pi, K, and p produced from four heavy targets, as a function of pt2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-028 HADRON-ATTENUATION |
Multiplicity ratio RAh for negatively-charged hadrons produced from four heavy targets, as a function of nu, z, and Q2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-027 HADRON-ATTENUATION |
Multiplicity ratio RAh for positively-charged hadrons produced from four heavy targets, as a function of nu, z, and Q2 May 29, 2007 *Colour (eps) *Colour (pdf) *Data |
N. Akopov
final |
|
07-026 HADRON-ATTENUATION |
Diagram of the kinematic variables used in the analysis of deep inelastic hadron production from heavy nuclear targets May 29, 2007 *BW (eps) *BW (pdf) |
N. Akopov
final |
|
07-025 EXCLUSIVE rho, sivers |
Sivers moments for exclusive production of longitudinally-polarized rho0 from a transversely polarized hydrogen target vs x, compared with a GPD calculation May 9, 2007 *Colour (eps) *Colour (pdf) |
A. Rostomyan and J. Dreschler
prelim |
|
07-024 EXCLUSIVE rho, sivers |
Sivers moments for exclusive production of longitudinally-polarized rho0 from a transversely polarized hydrogen target vs -t', compared with a GPD calculation May 9, 2007 *Colour (eps) *Colour (pdf) |
A. Rostomyan and J. Dreschler
prelim |
|
07-023 EXCLUSIVE rho, sivers |
Sivers moments for exclusive rho0 production from a transversely polarized hydrogen target, LT-separated, vs Q2, x, and -t' May 9, 2007 *Colour (eps) *Colour (pdf) |
A. Rostomyan and J. Dreschler
prelim |
|
07-022 AZIMUTHAL beam |
Comparison of the \pi^+ amplitude uncorrected $A_{LU}^{sin \phi}$ (full circles) and corrected $\widetilde{A}_{LU}^{sin \phi}$ (open squares) for VM contribution with model predictions. Outer error bars represent the uncertainties introduced by VM subtraction. A fractional scale uncertainty of 5.5% and a systematic uncertainty of 0.005 are common. The solid curve represents the quark-diquark model, and the dashed curve the chiral quark model Apr 23, 2007 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
E. Avetisyan
final |
|
07-021 AZIMUTHAL beam |
Comparison of the kinematically rescaled asymmetry amplitudes $A^{\sin\phi}_{LU}\cdot\langle Q\rangle/f(\langle y \rangle)$ for \pi^+ between the HERMES (circles) and CLAS (triangles) measurements. The full square represents a previous HERMES measurement, averaged over the indicated large z range (0.2 |
E. Avetisyan
final |
|
07-020 AZIMUTHAL beam |
Dependence of $\widetilde{A}_{LU}^{\sin\phi}$ on z, x and P_{h\perp} for charged pions. The contribution from VM decays has been determined from a Monte-Carlo simulation and subsequently subtracted from the asymmetries. The measurement of the x and P_{h\perp} dependences is made separately for low (0.2 |
E. Avetisyan
final |
|
07-019 AZIMUTHAL beam |
Top panel: amplitude A_{LU}^{\sin\phi}$ for pi^+ mesons originating from $\rho0$ meson decays, obtained with Monte Carlo (band) and data (full circles). The open cross displays the asymmetry for the $\rho0$ itself (Monte Carlo). Bottom panel: the fraction of pions in the SIDIS sample originating from VM decays Apr 23, 2007 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
E. Avetisyan
final |
|
07-018 AZIMUTHAL beam |
Dependence of the beam SSA on z, x, and $P_{h\perp}$. Results for the x and $P_{h\perp}$ dependences are presented separately for the low-z (0.2 |
E. Avetisyan
final |
|
07-017 AZIMUTHAL beam |
Beam SSA as a function of $\phi$ for $\pi^+$ electroproduction at mid-$z$ range. The solid curve represents a $\sin\phi$ fit, and the dashed one includes also the $\sin2\phi$ harmonic. Only statistical errors are shown Apr 23, 2007 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
E. Avetisyan
final |
|
07-016 AZIMUTHAL beam |
Definition of kinematic planes for semi-inclusive deep-inelastic scattering Apr 23, 2007 *BW (eps) *BW (pdf) |
E. Avetisyan
final |
|
07-015 TRANSVERSE |
Sivers moments of AUT for pi+ and K+ (overlaid) and pi- and K- (overlaid) production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) INFO: See records 07-012 and 07-014 for data tables. |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-014 TRANSVERSE |
Sivers moments of AUT for SIDIS K+ and K- production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-013 TRANSVERSE |
Sivers moments of AUT for pi0 production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-012 TRANSVERSE |
Sivers moments of AUT for SIDIS pi+ and pi- production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-011 TRANSVERSE |
Collins moments of AUT for pi+ and K+ (overlaid) and pi- and K- (overlaid) production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) INFO: See records 07-008 and 07-010 for data tables. |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-010 TRANSVERSE |
Collins moments of AUT for SIDIS K+ and K- production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-009 TRANSVERSE |
Collins moments of AUT for pi0 production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-008 TRANSVERSE |
Collins moments of AUT for SIDIS pi+ and pi- production from the full 2002-2005 data May 29, 2007 *Colour (eps) *Colour (pdf) |
M. Diefenthaler and L. Pappalardo
prelim |
|
07-007 HADRON-ATTENUATION pt broadening |
z dependence of <pt2>A - <pt2>D on Ne, Kr, Xe targets in panels separated by hadron type (pi+, pi-, K+) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
|
07-006 HADRON-ATTENUATION pt broadening |
Q2 dependence of <pt2>A - <pt2>D on Ne, Kr, Xe targets in panels separated by hadron type (pi+, pi-, K+) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
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07-005 HADRON-ATTENUATION pt broadening |
nu dependence of <pt2>A - <pt2>D on Ne, Kr, Xe targets in panels separated by hadron type (pi+, pi-, K+) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
|
07-004 HADRON-ATTENUATION pt broadening |
z dependence of <pt2>A - <pt2>D for pi+, pi-, K+ in panels separated by target nucleus (Ne, Kr, Xe) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
|
07-003 HADRON-ATTENUATION pt broadening |
Q2 dependence of <pt2>A - <pt2>D for pi+, pi-, K+ in panels separated by target nucleus (Ne, Kr, Xe) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
|
07-002 HADRON-ATTENUATION pt broadening |
nu dependence of <pt2>A - <pt2>D for pi+, pi-, K+ in panels separated by target nucleus (Ne, Kr, Xe) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
|
07-001 HADRON-ATTENUATION pt broadening |
A dependence of <pt2>A - <pt2>D for pi+, pi-, K+ production on Ne, Kr, and Xe (one panel) Apr 20, 2007 *Colour (eps) *Colour (pdf) |
Y. van Haarlem
prelim |
| Year: 2006 | ||
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06-086 HADRON-ATTENUATION pt broadening |
x dependence of <pt2>A / <pt2>D for charged hadron (combined) production from 3He, 4He, N, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
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06-085 HADRON-ATTENUATION pt broadening |
z dependence of <pt2>A / <pt2>D for charged hadron (combined) production from 3He, 4He, N, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
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06-084 HADRON-ATTENUATION pt broadening |
contour plots of 2-dimensional (nu,z) dependence of <pt2>A / <pt2>D for charged hadron (combined) production from N, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
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06-083 HADRON-ATTENUATION pt broadening |
A1/3 dependence of <pt2>A / <pt2>D for charged hadron (combined) production from 3He, 4He, N, Ne, Kr, Xe in eight hadron-momentum bins May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
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06-082 HADRON-ATTENUATION pt broadening |
p dependence of <pt2>A / <pt2>D for charged hadron (combined) production from 3He, 4He, N, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
|
06-081 HADRON-ATTENUATION pt broadening |
p dependence of <pt2>A / <pt2>D for charged kaon (combined) production from 4He, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
|
06-080 HADRON-ATTENUATION pt broadening |
p dependence of <pt2>A / <pt2>D for charged pion (combined) production from 3He, 4He, N, Ne, Kr, Xe May 30, 2007 *Colour (eps) *Colour (pdf) |
A. Jgoun
prelim |
|
06-079 HIGH-PT |
Dg/g extracted with method-I and method-II as function of x. Input are the asymmetries for inclusive charged hadrons from deuterium target. Data from Compass and SMC as well as various different results from QCD-fits are included too Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-078 HIGH-PT |
Dg/g extracted with method-I and method-II as function of x. Input are the asymmetries for inclusive charged hadrons from deuterium target Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-077 HIGH-PT |
Dg/g extracted with method-II using two different functinal forms as function of pT-beam. Input are the asymmetries for inclusive charged hadrons from deuterium target Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-076 HIGH-PT |
Dg/g extracted with method-I and method-II as function of pT. Input are the asymmetries for inclusive charged hadrons from deuterium target Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-075 HIGH-PT |
Dg/g as function of pT for inclusive, semi-inclusive charged hadrons and for hadron pairs from hydrogen and deuterium targets Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-074 HIGH-PT |
A-parallel as function of pT-beam for inclusive charged hadrons from hydrogen and deuterium targets. The curves show calculations with PYTHIA for A-parallel assuming different values of DG/G Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-073 HIGH-PT |
A-parallel as function of pT for semi-inclusive charged hadrons from hydrogen and deuterium targets. The curves show calculations with PYTHIA for A-parallel assuming different values of DG/G Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-072 HIGH-PT |
A-parallel as function of pT-beam for hadrons pairs from hydrogen and deuterium targets. The curves show calculations with PYTHIA for A-parallel assuming different values of DG/G Sep 26, 2006 *Colour (eps) *Colour (pdf) |
P. Liebing
prelim |
|
06-071 HIGH-PT |
Fractions of subprocesses contributing to inclusive charged hadron production as given by pythia as function of p\ T-beam Sep 26, 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
P. Liebing
prelim |
|
06-070 HIGH-PT |
Asymmetries of the subprocesses contributing to inclusive charged hadron production introduced to pythia as function of pT-beam Sep 26, 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
P. Liebing
prelim |
|
06-069 HIGH-PT |
Data-MC (pythia) comparison for inclusive charged hardon production Sep 26, 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
P. Liebing
prelim |
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06-068 HIGH-PT |
The relation of x and pT-beam for inclusive hadrons as given by pythia Sep 26, 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
P. Liebing
prelim |
|
06-067 HIGH-PT |
The two functional forms for dG/g used for method-II as function of x Sep 26, 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
P. Liebing
prelim |
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06-066 PR-PLOT |
Average beam polarisation per fill for 2003-2006 2006 *Colour (eps) *Colour (pdf) |
E.C. Aschenauer
final |
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06-056 LAMBDA-POL longitudinal |
Dependence of the longitudinal spin-transfer coefficient on xF. The HERMES measurements are represented by the solid circles, while the open symbols represent data from NOMAD (squares) and E665 (circles). Error bars are statistical only. As explained in the text, for the neutrino-induced NOMAD data the quantity plotted is $-P^\nu_\Lambda$ Nov 1, 2006 *Colour *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
I. Naryshkine
final |
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06-055 LAMBDA-POL longitudinal |
Dependence of the longitudinal spin-transfer coefficient on z, for xF > 0. The curves represent the phenomenological model calculations as described in the text. Error bars are statistical only Nov 1, 2006 *Colour *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
I. Naryshkine
final |
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06-054 LAMBDA-POL longitudinal |
The yield of semi-inclusively produced \lam hyperons in deep-inelastic scattering. The left (right) panel shows the invariant-mass spectrum before (after) the application of background suppression cuts. The vertical lines show the boundaries at \pm 3.3\sigma. The spectra include essentially all data recorded from unpolarized targets by the HERMES spectrometer in the years 1996 -- 1997 and 1999 -- 2000, corresponding to a yield of 30.3 \times 106 inclusive deep-inelastic scattering events Nov 1, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
I. Naryshkine
final |
|
06-053 LAMBDA-POL longitudinal |
Purities for \lam production from the proton target within the HERMES acceptance, calculated separately for quarks and antiquarks of various flavors at xF>0 with $\langle Q2 \rangle $=2.41 GeV2 Nov 1, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
I. Naryshkine
final |
|
06-052 LAMBDA-POL longitudinal |
The single-quark scattering mechanism leading to Lambda- production in polarized deep-inelastic positron scattering Nov 1, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
I. Naryshkine
final |
|
06-051 G1 |
World data for the structure function g1 of the deuteron as function of Q2 (Q2 >1 GeV2) for fixed x 2006 *Colour *Colour (eps) *Colour (pdf) |
H. Boettcher
final |
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06-050 G1 |
World data for the structure function g1 of the proton as function of Q2 (Q2 >1 GeV2) for fixed x 2006 *Colour *Colour (eps) *Colour (pdf) |
H. Boettcher
final |
|
06-049 G1 |
Top two panels: measured and unfolded Born asymmetries for proton and deuteron. The error bars of the Born asymmetries are the square root of the diagonal elements of the covariance matrix obtained after unfolding, with the inclusion of the uncertainty due to the statistics of the Monte Carlo. Bottom panel: uncertainty inflation when going from measured to Born asymmetry due to the unfolding procedure. The symbols A, B and C refer to the Q2-bins Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-048a G1 |
Migration matrices $M_{\spar}$ (the $M_{\sant}$ matrices look similar) for two different binnings. Migration matrix for a pure x binning. The horizontal and vertical lines divide the x-bins; within each x-bin the Q2-bins are arranged in increasing Q2. The matrices are extracted from a fully reconstructed Monte Carlo data set simulating both QED radiative and detector effects for inclusive DIS on a proton target Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-048b G1 |
Migration matrices $M_{\spar}$ (the $M_{\sant}$ matrices look similar) for two different binnings. Migration matrix for the combined x and Q2 binning used in this analysis. The horizontal and vertical lines divide the x-bins; within each x-bin the Q2-bins are arranged in increasing Q2. The matrices are extracted from a fully reconstructed Monte Carlo data set simulating both QED radiative and detector effects for inclusive DIS on a proton target Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-047 G1 |
Integrals of g1^{p,d,n,NS} over the range 0.021= Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
|
06-046 G1 |
Top panel: xg1n from data for g1p and g1d. Bottom panel: the x-weighted non-singlet spin structure function xg1^{NS}, compared to data from SMC, E143, and E155. All data are presented at their measured values of $\langle Q2\rangle$, except that the E155 data in each x bin have been averaged over Q2 for visual purposes. Total uncertainties are shown as bars. For the HERMES data the closed (open) symbols represent values derived by selecting events with Q2 >1GeV2 (Q2<1GeV2) Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
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06-046a G1 |
Same as 06-046 just with including a panel for Q2 vs x for the different experiments Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-045 G1 |
Top panel: the structure function g1n obtained from g1p and g1d, compared with similar data from SMC, E143, and E155 in the HERMES x-range. Second panel from the top: g1n as obtained from a He3 target by JLab, HERMES, E142, and E154. Total error bars are shown, obtained by combining statistical and systematic uncertainties in quadrature. The bottom panel shows the $\langle Q2\rangle$ of each data point in the top two panels. E155 data have been averaged over their Q2 bins for visibility. For the HERMES data the closed (open) symbols represent values derived by selecting events with $Q2 >1$~GeV$^2$ ($ Q2 <1$~GeV$^2$) Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
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06-045a G1 |
Same as 06-045 just xg1n Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
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06-044 G1 |
HERMES results on xg1p and xg1d vs x, shown on separate panels, compared to data from SMC, E143, E155, and COMPASS. The error bars represent the sum in quadrature of statistical and systematic uncertainties. The HERMES data points shown are statistically correlated by unfolding QED radiative and detector smearing effects; the statistical uncertainties shown are obtained from only the diagonal elements of the covariance matrix. The E143 and E155 data points are correlated due to the method for correcting for QED radiation. For the HERMES data the closed (open) symbols represent values derived by selecting events with Q2>1GeV2 (Q2 <1GeV2 ) Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-044a G1 |
Same plot as 06-044 just without Q2 pannel and the COMPASS data are from hep-ex/0609038 and not from hep-ex/0501073 like in the bw-paper plots Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-044b G1 |
Q2-panel plot for 06-044a Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
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06-043 G1 |
HERMES results for xg1 vs x for the proton and the deuteron. Error bars represent statistical uncertainties of the data (from the diagonal elements of the covariance matrix combined quadratically with those from Monte Carlo statistics. The upper and lower error bands represent the total systematic uncertainties for the proton and deuteron, respectively. The deuteron data points have been slightly shifted in x for visibility. The closed (open) symbols represent values derived by selecting events with Q2 >1GeV2 (Q2 <1GeV2) Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
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06-043a G1 |
same plot as 06-043 with Q2-panel for the HERMES-points Oct 31, 2006 *Colour (eps) |
L. De Nardo
final |
|
06-042 G1 |
HERMES results on g1p and g1d vs x, shown on separate panels, compared to data from SMC, E143, E155, and COMPASS, in the HERMES x-range. Error bars represent the sum in quadrature of statistical and systematic uncertainties. The HERMES data points shown are statistically correlated by unfolding QED radiative and detector smearing effects; the statistical uncertainties shown are obtained from only the diagonal elements of the covariance matrix. The E143 and E155 data points are correlated through QED radiative corrections. The E155 points have been averaged over their $Q2$ bins for visibility. For the HERMES data the closed (open) symbols represent values derived by selecting events with Q2 >1GeV2 (Q2 <1GeV2) Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: For the color plot the COMPASS data are from hep-ex/0609038 and not from hep-ex/0501073 like in the bw-paper plots |
L. De Nardo
final |
|
06-042a G1 |
Panel with Q2 vs x for the different experiments for plot 06-042 Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-041 G1 |
HERMES results on A1p and A1d vs x, shown on separate panels, compared to data from SMC, E143, E155, and COMPASS. Error bars represent the sum in quadrature of statistical and systematic uncertainties. For the HERMES data the closed (open) symbols represent values derived by selecting events with Q2 >1GeV2 (Q2 <1GeV2). The HERMES data points shown are statistically correlated by unfolding QED radiative and detector smearing effects; the statistical uncertainties shown are obtained from the diagonal elements of the covariance matrix, only. The E143 and E155 data points are correlated through QED radiative corrections. The lower panel shows the x dependence of $\langle Q2\rangle$ for the different experiments Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: For the color plot the COMPASS data are from hep-ex/0609038 and not from hep-ex/0501073 like in the bw-paper plots |
L. De Nardo
final |
|
06-041a G1 |
Same as plot 06-041 just without Q2-panel Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-041b G1 |
Panel with Q2 vs x for the different experiments for plot 06-041 Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-040 G1 |
HERMES results on A1 vs x for proton and deuteron. Error bars represent statistical uncertainties of the data (diagonal elements of the covariance matrix) combined quadratically with those from Monte Carlo statistics. Bands represent systematic uncertainties. Deuteron data points have been slightly shifted in $x$ for visual purposes Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
|
06-039 G1 |
Correlation matrix in 19 x-bins of g1 for the proton. The closed symbols represent positive values, while the open ones are for negative values. The area of the symbols represents the size of the correlation Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
|
06-039a G1 |
same as 06-039 just for deuterium Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-038 G1 |
Efficiency for the detection of B-H elastic (el.) and quasi-elastic (q.el.) events in the HERMES spectrometer, for scattering on both deuteron (d) and proton (p). The efficiency is set to unity for x>0.1 Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-037 G1 |
The distribution of events originating from the arbitrarily selected x-bin shown as a shaded area, from a simulation of QED radiative effects and detector smearing, using a proton target. The vertical lines indicate x-bin boundaries Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-036 G1 |
Percentage of charge symmetric background in each $x-Q2$ bin, for the proton and the deuteron targets Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-035 G1 |
Kinematic x-Q2 and x-y planes covered by this analysis. The symbols represent the average values of (x,Q2) (top panel) and (x,y) (bottom panel) in each bin. Subdivision of the x-bins along Q2 is denoted by different symbols (A, B, C) Oct 31, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
L. De Nardo
final |
|
06-035a G1 |
Kinematic x-y planes covered by this analysis. The symbols represent the average values (x,y) in each bin. Subdivision of the x-bins along Q2 is denoted by different symbols (A, B, C) Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-034 G1 |
A schematic side view of the HERMES spectrometer Oct 31, 2006 *Colour (eps) *Colour (pdf) |
L. De Nardo
final |
|
06-033 G1 |
Schematic view of the longitudinally polarized target. From left to right: Atomic Beam Source (ABS) containing Radio-Frequency Transitions (RFT), target chamber with cell and magnet, diagnostic system composed by Target Gas Analyzer (TGA), and Breit-Rabi Polarimeter (BRP) Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
|
06-032 G1 |
Schematic picture of Deep-Inelastic Scattering for one photon exchange Oct 31, 2006 *BW (eps) *BW (pdf) |
L. De Nardo
final |
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06-032a G1 |
Tar-file including all the Hermes data included in the paper Oct 31, 2006 *Data |
L. De Nardo
final |
|
06-031 EXCLUSIVE |
Single target-spin asymmetry AUT^{sin(\phi-\phiS)} as function of x for exclusive rho0 production. The curves represent the GPD model calculations from A. Vinnikov [Ellinghaus et al., EPJC46,729, 2006; hep-ph/0506264] for Hermes kinematics 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
A. Rostomyan
prelim |
|
06-030 EXCLUSIVE |
Single target-spin asymmetry AUT^{sin(\phi-\phiS)} as function of -t' for exclusive rho0 production. The curves represent the GPD model calculations from A. Vinnikov [Ellinghaus et al., EPJC46,729, 2006; hep-ph/0506264] for Hermes kinematics 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
A. Rostomyan
prelim |
|
06-029 DIAGRAM |
Diagram of polarized semi-inclusive DIS for a logitudinal polarized target, showing a realistic view on fragmentation Jun 12, 2006 *Colour (eps) *Colour (pdf) *Colour (fig) |
B. Maiheu / L. de Nardo
final |
|
06-028 TRANSVERSE |
Sivers moments for charged pions and kaons as function of x, z and $P_{h\perp}$. The error band represents the systematic uncertainty of the kaons as described in 06-005 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot; Please regard our latest plots with the full available statistics 07-015 |
M. Diefenthaler
prelim |
|
06-027 TRANSVERSE |
Virtual photon Collins moments for charged pions and kaons as function of x, z and $P_{h\perp}$. The error band represents the systematic uncertainty of the kaons as described in 06-005 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot; supportive plot; Please regard our latest plots with the full available statistics 07-011 |
M. Diefenthaler
prelim |
|
06-026 DIAGRAM |
a the HERMES logo for Christmas Jun 3, 2006 *Colour (eps) *Colour (pdf) |
A. Andrus
final |
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06-025 DIAGRAM |
a the HERMES logo with a smiley Jun 3, 2006 *Colour (eps) *Colour (pdf) |
not-known
final |
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06-024 EXPERIMENT spectrometer |
Side view of HERMES spectrometer configuration 1996-1997 May 29, 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
E.C. Aschenauer
final |
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06-023 EXPERIMENT spectrometer |
Side view of HERMES spectrometer configuration 1998-2000 May 29, 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
E.C. Aschenauer
final |
|
06-022 EXPERIMENT spectrometer |
Side view of HERMES spectrometer configuration 2001-2005 Jan 18, 2002 *Colour (eps) *Colour (pdf) *Colour (fig) |
U. ELschenbroich/E.C. Aschenauer
final |
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06-021 EXPERIMENT spectrometer |
Side view of HERMES spectrometer configuration 2006-2007 May 29, 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
E.C. Aschenauer
final |
|
06-020 DVCS proton |
The $cos \phi$ amplitude of the beam--charge asymmetry as a function of $-t$ for the exclusive region (-1.5GeV < MX < 1.7GeV), after background correction. The error bars (band) represent(s) the statistical (systematic) uncertainties. The calculations based on GPD models (VGG, PRD 60 (1999) 094017, Goeke et al. Prog. Part. Nucl. Phys. 47 (2001) 401) use either a factorized t--dependence with (dashed--dotted) or without (dotted) the D-term contribution, or a Regge--inspired t--dependence with (dashed) or without (solid) the D-term contribution May 25, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
F. Ellinghaus
final |
|
06-019 DVCS proton |
function of the missing mass. Statistical uncertainties are shown May 25, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
F. Ellinghaus
final |
|
06-018 DVCS proton |
Beam--charge asymmetry $AC$ for the hard electroproduction of photons off protons as a function of the azimuthal angle \phi, for the exclusive sample (-1.5GeV < MX < 1.7GeV) before background correction. Statistical uncertainties are shown. The solid curve shows the result of a four--parameter fit: (-0.011\pm0.019) + (0.060\pm0.027) \cos \phi + (0.016\pm0.026) \cos 2 \phi + (0.034\pm0.027) \cos 3 \phi. The dashed line shows the pure \cos \phi dependence May 25, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
F. Ellinghaus
final |
|
06-017 DVCS proton |
Distributions in missing--mass squared from data (statistical error bars) and from Monte Carlo simulations (line). The latter include elastic BH (filled area) and associated BH (hatched area) processes as well as semi--inclusive background. The vertical lines enclose the selected exclusive region May 25, 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
F. Ellinghaus
final |
|
06-016 EXCLUSIVE |
Absolute cross section of the reaction e+p -> e+rho0+X from 2000 data (points) as function of the missing energy compared to Pythia (histogram). The yellow area highlights the region dE<0.8 GeV 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
A. Rostomyan
prelim |
|
06-014 TRANSVERSE |
Virtual photon Collins moments for charged pions as function of x, z and $P_{h\perp}$ compared to theoretical curves from [Efremov et al. hep-ph/0603054]. For the x-dependence the data are fitted using always a gaussian ansatz and a cQSM for the transversity function from [PRD64(2001),034013] to obtain a value for the favoured and unfavoured Collins ff (Eqn. 10 and 11 in hep-ph/0603054). In contrast, for the z dependence the curves are based on a fit of the Collins ff to the BELLE data and on the same cQSModel for the transversity function. The light shaded area indicates the sensitivity of the SSA to the unknown ratio of the gaussian width of h1 and H1^\perp 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot; supportive plot; Please regard our latest plots with the full available statistics 07-008 |
M. Diefenthaler
prelim |
|
06-013 TRANSVERSE |
Sivers moments for charged pions as function of x, z and $P_{h\perp}$ compared to the results of a fit to our data by Anselmino et al. in PRD72,94007 using a certain parametrisation of the sivers function. The shaded area corresponds to the theoretical uncertainty due to the parameter errors (the 1-sigma deviation calculated from the parameter errors and their correlation matrices) 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot; Please regard our latest plots with the full available statistics 07-012 |
M. Diefenthaler
prelim |
|
06-012 TRANSVERSE |
Sivers moments for charged kaons as function of x, z and $P_{h\perp}$ compared to the predictions of Anselmino et al. in PRD72,94007 obtained from fixing the parameters for the ansatz for the sivers function by fitting our pion data. The shaded area corresponds to the theoretical uncertainty due to the parameter errors 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot; Please regard our latest plots with the full available statistics 07-014 |
M. Diefenthaler
prelim |
|
06-011 HYPERONS lambda |
The L(1520) to pK- invariant mass spectrum with unbinned fit results. The obtained mass value has been corrected for acceptance effects 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot for the partial cross section for P>6GeV of the Lambda(1520) (with Pz > 6.0 GeV) = 65.3 +/- 8.8 (stat) +/- 6.9 (syst) nb. SEE 06-010 for the syst. uncertainty. |
W. Deconinck, S. Wang
prelim |
|
06-010 HYPERONS lambda |
The L-bar(1520) to p-bar K+ invariant mass spectrum with unbinned fit results. The obtained mass value has been corrected for acceptance effects 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot for the partial cross section for P>6GeV of the anti-Lambda(1520) (with Pz > 6.0 GeV) = 9.8 +/- 2.6 (stat) +/- 0.9 (syst) nb and the ratio anti-Lambda(1520)/Lambda(1520)= 0.15 +/- 0.05 (stat) +/- 0.02 (syst). Particle and anti-particle are assumed to be produced unpolarised. The systematic uncertainty in the cross section ratio is obtained from the variation in the signal counts when varying the fits for the mass peaks within the total uncertainty of the determined mass. |
W. Deconinck, S. Wang
prelim |
|
06-009 TRANSVERSE |
The asymmetry A(phi,phiS) as function of phi and phiS for pi+ 2006 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) INFO: supportive plot |
U. Elschenbroich
final |
|
06-008 EXPERIMENT target |
A photo of the HERMES target Apr 16, 2006 *Colour (eps) *Colour (pdf) |
Unknown
final |
|
06-007 EXPERIMENT target |
A photo of the HERMES target before removal in November 2005 Apr 16, 2006 *Colour (jpeg) |
E. Steffens
final |
|
06-006 TRANSVERSE |
The contribution of vector mesons in the SIDIS Kaon sample 2006 *Colour (eps) *Colour (pdf) INFO: supportive plot |
M. Diefenthaler, U. Elschenbroich
prelim |
|
06-005 TRANSVERSE |
Sivers moments for charged kaons as function of x, z and $P_{h\perp}$. The error band represents the maximal systematic uncertainty due to RICH unfolding, acceptance and detector smearing effects and due to a possible contribution from the $\cos\phi$ moment in the unpolarised cross section. The common overall scaling uncertainty is due to the target polarisation uncertainty. The average values of the asymmetry and the kinematics are for K+: A=0.0925+/-0.0147+/-0.0091, x=0.101, z=0.37, Pt=0.42, y=0.51, Q2=2.51$ and for K-: A=0.0167+/-0.0266+/-0.0093, x=0.096, z=0.33, Pt=0.39, y=0.52, Q2=2.40 2006 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-014 |
M. Diefenthaler, U. Elschenbroich
prelim |
|
06-004 TRANSVERSE |
Virtual photon Collins moments for charged kaons as function of x, z and $P_{h\perp}$. The error band represents the uncertainties as in 06-005. The average values of the asymmetry are K+: A=0.0172+/-0.0232+/-0.0177 and K-: A=0.0605+/-0.0450+/-0.0220 and for the kinematics the same as given in 06-005 2006 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-010 |
M. Diefenthaler, U. Elschenbroich
prelim |
|
06-003 TRANSVERSE |
Lepton beam Collins moments for charged kaons as function of x, z and $P_{h\perp}$. The error band represents the uncertainties as in 06-005. The average values of the asymmetry are K+: A=0.0059+/-0.0154+/-0.0078 and K-: A=0.0502+/-0.0299+/-0.0146 and for the kinematics the same as given in 06-005 2006 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-010 |
M. Diefenthaler, U. Elschenbroich
prelim |
| Year: 2005 | ||
| Back to top | ||
|
05-133 PR-PLOT |
average beam polarisation per fill for 2000, 2003-2005 Nov 13, 2005 *Colour (eps) *Colour (pdf) |
E. C. Aschenauer
final |
|
05-118 HADRON-ATTENUATION |
The ratio $R_{2h}$ as a function of z2 for N14 (squares), Kr (circles) and Xe (triangles) with z1>0.5 for Selection II. The systematic uncertainty is 4\% (3\%) for xenon and krypton (nitrogen) and is independent of z2. The curves N14: solid; Kr: dashed; Xe: dotted) are from the models by X.N.Wang and A.Majumder Oct 11, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
P. DiNezza
final |
|
05-117 HADRON-ATTENUATION |
The ratio $R_{2h}$ as a function of z2 for N14 (squares), Kr (circles) and Xe (triangles) with z1>0.5. The systematical uncertainty is 2\% for all the targets and is independent of z2. In the upper panel the curves (solid for N14, dashed for Kr, dotted for Xe) are calculated within a BUU transport model by Falter et al. In the bottom panel the same data are shown with calculations that assume only absorption for the three nuclei (same line types as in the upper plot) Oct 11, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
P. DiNezza
final |
|
05-112 DELTA-Q |
The inclusive asymmetry A1,d from the delta-q analysis and as published in the delta-q paper 2005 *Colour (eps) *Colour (pdf) INFO: supportive plot |
M. Beckmann (provided by L. De Nardo)
final |
|
05-108 EXOTICS pentaquark |
K0s spectrum associated with Theta-bar spectrum Jul 28, 2005 *Colour (eps) *Colour (pdf) |
W. Deconinck
prelim |
|
05-107 EXOTICS pentaquark |
The Theta-bar spectrum Jul 28, 2005 *Colour (eps) *Colour (pdf) |
W. Deconinck
prelim |
|
05-106 DIAGRAM |
Diagram of polarized semi-inclusive DIS for a transverse polarized target, transversity case Jul 24, 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
U. Elschenbroich
final |
|
05-105 DIAGRAM |
Diagram of polarized semi-inclusive DIS for a transverse polarized target, sivers case Jul 24, 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
U. Elschenbroich
final |
|
05-104 EXPERIMENT recoil |
3D picture of the HERMES spectrometer with the recoil detector Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-103 EXPERIMENT recoil |
3D picture of the HERMES front region with the recoil detector Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-102 EXPERIMENT spectrometer |
3D picture of the HERMES front region with the polarised target Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101 EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101a EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101b EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101c EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101d EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (jpeg) |
J. Kuhlmann, V. Prahl
final |
|
05-101f EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (pdf) |
J. Kuhlmann, V. Prahl
final |
|
05-101g EXPERIMENT spectrometer |
3D picture of the HERMES spectrometer in different views Jul 24, 2005 *Colour (pdf) |
J. Kuhlmann, V. Prahl
final |
|
05-100 EXPERIMENT recoil |
Missing Mass spectrum showing the exclusive and the semi-inclusive area. The different backgrounds leaking into the exclusive region are explained. The left plot shows the misingmass without the using the information from the recoiling proton in the recoil detector the right one what happens using the recoil detector. The left plot is similiar to 05-099 or 05-099a Jul 24, 2005 *Colour (eps) *Colour (pdf) |
B. Krauss, R. Kaiser
prelim |
|
05-099 DVCS |
Missing Mass spectrum showing the exclusive and the semi-inclusive area. The different backgrounds leaking into the exclusive region are explained Jul 24, 2005 *Colour (eps) *Colour (pdf) |
F. Ellinghaus
prelim |
|
05-099a DVCS |
Missing Mass spectrum showing the exclusive and the semi-inclusive area. The different backgrounds leaking into the exclusive region are explained. Only the upper plot of 05-099 Jul 24, 2005 *Colour (eps) *Colour (pdf) |
F. Ellinghaus
prelim |
|
05-098 DVCS |
First cosine moment (fit method) of BCA on hydrogen and on deuterium as function of t-constraint compared to VGG model with different ansatzes for the parametrisations Aug 10, 2004 *Colour (eps) *Colour (pdf) INFO: This plot corresponds to the data shown in 06-020 (p) and 04-043. |
F. Ellinghaus
prelim |
|
05-095 B1 |
Korrelation matrix for the born level asymmetries on the deuteron Jun 8, 2005 *Data |
C. Riedl
final |
|
05-094 B1 |
The tensor structure function presented as (top) $\bd(x)$ and (middle) $x\bd(x)$. The error bars are statistical and the shaded bands show the systematic uncertainty. The bottom panel shows the average value of $Q2$ in each $x$-bin Jun 8, 2005 *Colour (eps) *Colour (pdf) *Data |
C. Riedl
final |
|
05-093 B1 |
The tensor asymmetry $\At(x)$. The error bars are statistical and the shaded band shows the systematic uncertainty Jun 8, 2005 *Colour (eps) *Colour (pdf) |
C. Riedl
final |
|
05-092 DIAGRAM |
Flashy diagram of kinematics in the (transversity) analysis of interference fragmentation functions. Longitudinally polarized target('3d') - in agreement with Trento Conventions Apr 28, 2005 *Colour *Colour (eps) *Colour (pdf) |
P.B. van der Nat
final |
|
05-091 DVCS proton |
The \phi dependence of the longitudinal target-spin asymmetry (LTSA) on hydrogen May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-090 DVCS deuterium |
The \phi dependence of the longitudinal target-spin asymmetry (LTSA) on deuterium May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-089 DVCS proton, deuterium |
The $\sin \phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of t May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-088 DVCS proton, deuterium |
The $\sin 2\phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of t May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-087 DVCS proton, deuterium |
The $\sin \phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of t compared to VGG model predictions May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-086 DVCS proton, deuterium |
The $\sin 2\phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of t compared to VGG model predictions May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-085 DVCS proton, deuterium |
The $\sin \phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of x-Bjorken May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-084 DVCS proton, deuterium |
The $\sin 2\phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of x-Bjorken May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-083 DVCS proton, deuterium |
The $\sin \phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of Q2 May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-082 DVCS proton, deuterium |
The $\sin 2\phi$ moment (fit method) of longitudinal target-spin asymmetry (LTSA) on hydrogen and deuterium as function of Q2 May 26, 2005 *Colour (eps) *Colour (pdf) |
M. Kopytin
prelim |
|
05-081 TRANSVERSE |
The definitions of the azimuthal angle $\phi$ of the hadron production plane, relative to the plane containing the momentum $\vec{l}$ ($\vec{l}'$) of the incident (scattered) lepton May 16, 2005 *BW (eps) *BW (pdf) |
U. Elschenbroich
final |
|
05-080 TRANSVERSE |
The various azimuthal moments appearing in the measurement of the $\sin\phi$ modulations of single-spin asymmetries on a longitudinally polarised target. Open symbols: measured epton axis moments; the ones from a transversely polarised target are multiplied by $-\sin\theta_{gamma ^*}$. Closed symbols: subleading-twist contribution to the measured lepton-axis asymmetries on a longitudinally polarised target. An overall systematic error of 0.003 is not included in the figure May 16, 2005 *Colour *BW *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
U. Elschenbroich
final |
|
05-079 FRAGMENTATION |
Charged pion multiplicities as function of Q2 for four different bins in z obtained from 2000 unpolarised hydrogen data. Errorbars and band like in plot 04-066 for pi+. The data is compared to parametrisations of charged pion fragmentation function from S. Kretzer 2005 *Colour (eps) *Colour (pdf) |
A. Hillenbrand
prelim |
|
05-078 TRANSVERSE |
Lepton beam Collins moments as function of x, z and $P_{h\perp}$ for charged pions. The error band represents the maximal systematic uncertainty due to acceptance and detector smearing effects and due to a possible contribution from the $\cos\phi$ moment in the unpolarised cross section. The common overall scaling uncertainty is due to the target polarisation uncertainty. The average values of the asymmetry and the kinematics are for pi+: A=0.020+/-0.0046+/-0.0012, x=0.095, z=0.36, Pt=0.40, y=0.54, Q2=2.43 and for pi-: A=-0.0254+/-0.0053+/-0.0015, x=0.091, z=0.35, Pt=0.40, y=0.54, Q2=2.35 2005 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-008 |
M. Diefenthaler, U. Elschenbroich
prelim |
|
05-077 TRANSVERSE |
Virtual photon Collins moments as function of x, z and $P_{h\perp}$. The error band represents the maximal systematic uncertainty due to acceptance and detector smearing effects and due to a possible contribution from the $\cos\phi$ moment in the unpolarised cross section. The common overall scaling uncertainty is due to the target polarisation uncertainty. The average values of the asymmetry are pi+: A=0.0373+/-0.0075+/-0.0018 and pi-: A=-0.0423+/-0.0089+/-0.0024 and for the kinematics the same as given in 05-078 2005 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-008 |
M. Diefenthaler, U. Elschenbroich
prelim |
|
05-076 TRANSVERSE |
Sivers moments as function of x, z and $P_{h\perp}$. The error band represents the maximal systematic uncertainty due to acceptance and detector smearing effects and due to a possible contribution from the $\cos\phi$ moment in the unpolarised cross section. The common overall scaling uncertainty is due to the target polarisation uncertainty. The average values of the asymmetry are pi+: A=0.0416+/-0.0046+/-0.0021 and pi-: A=0.0030+/-0.0055+/-0.0007 and for the kinematics the same as given in 05-078 2005 *Colour (eps) *Colour (pdf) INFO: Please regard our latest plots with the full available statistics 07-012 |
M. Diefenthaler, U. Elschenbroich
prelim |
|
05-073 TRANSVERSE |
Dilution due to pions from exclusive vector meson production in the semi-inclusive pion sample for a proton target 2005 *Colour (eps) *Colour (pdf) INFO: supportive plot |
M. Diefenthaler, U. Elschenbroich
prelim |
|
05-070 TRANSVERSE 2pion |
Flashy diagram of kinematics in the (transversity) analysis of interference fragmentation functions. Longitudinally polarized target('3d') - in agreement with Trento Conventions Apr 28, 2005 *Colour *Colour (eps) *Colour (pdf) |
P.B. van der Nat
final |
|
05-069 EXOTICS pentaquark |
schematic plot show the decay topology and the placed cuts for the Xi-- 2005 *Colour (eps) *Colour (pdf) *Colour (fig) |
W. Deconinck
final |
|
05-068 DELTA-Q |
Korrelation matrix for the born level asymmetries on the deuteron Mar 28, 2005 *Data |
M. Beckmann
final |
|
05-067 DELTA-Q |
Korrelation matrix for the born level asymmetries on the proton Mar 28, 2005 *Data |
M. Beckmann
final |
|
05-066 TRANSVERSE |
The plot shows the relative contributions to the data from simulated exclusive vector meson production Mar 28, 2005 *Colour *Colour (eps) *Colour (pdf) |
G. Schnell
final |
|
05-065 TRANSVERSE |
Virtual-photon Sivers moments for charged pions as as a function of $x$ and $z$, multiplied by two to have the possible range $\pm1$. The error bars represent the statistical uncertainties. Common 8\% scale uncertainty in the moments. X-Axis included, contrary to plot 05-064 Mar 28, 2005 *Colour *BW *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
G. Schnell
final |
|
05-064 TRANSVERSE |
Virtual-photon Sivers moments for charged pions as as a function of $x$ and $z$, multiplied by two to have the possible range $\pm1$. The error bars represent the statistical uncertainties. Common 8\% scale uncertainty in the moments Mar 28, 2005 *Colour *BW *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
G. Schnell
final |
|
05-063 TRANSVERSE |
Virtual-photon Collins moments for charged pions as as a function of $x$ and $z$, multiplied by two to have the possible range $\pm1$. The error bars represent the statistical uncertainties. Common 8\% scale uncertainty in the moments. X-Axis included, contrary to plot 05-062 Mar 28, 2005 *Colour *BW *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) |
G. Schnell
final |
|
05-062 TRANSVERSE |
Virtual-photon Collins moments for charged pions as as a function of $x$ and $z$, multiplied by two to have the possible range $\pm1$. The error bars represent the statistical uncertainties. Common 8\% scale uncertainty in the moments Mar 28, 2005 *Colour *BW *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
G. Schnell
final |
|
05-061 TRANSVERSE |
The definitions of the azimuthal angles of the hadron production plane and the axis of the relevant component $\vec{S}_\perp$ of the target spin, relative to the plane containing the momentum $\vec{k}$ ($\vec{k}'$) of the incident (scattered) lepton Mar 28, 2005 *BW (eps) *BW (pdf) |
U. Elschenbroich
final |
|
05-060 DELTA-Q |
Matrices $nu(i,j)=n_\spar(i,j)+n_\sant(i,j)$ for DIS events and SIDIS $\pi^+$ events on the proton. The binning shown corresponds to the 9 bins in $x$ that were used in the asymmetry and $\Delta q$ analysis Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-059 DELTA-Q |
The average strange quark helicity density $x\cdot[\Delta s(x)+\Delta\bar{s}(x)]/2$ from the isoscalar extraction method (full points). For comparison the open symbols denote the results from a five parameter fit (see text), which are offset horizontally for presentation. The band in the bottom part gives the total systematic uncertainty on the results from the isoscalar extraction. The dark shaded area corresponds to the uncertainty from the input asymmetries, and the open part relates to the uncertainty in $\lambdas$ Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-058 DELTA-Q |
The semi--inclusive Born level asymmetry $A_{1,d}^{K^+ + K^-}$ for the total charged kaon flux on a deuterium target, corrected for instrumental smearing and QED radiative effects. The uncertainties are presented analogously to Fig. 13 Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-057 DELTA-Q |
The flavor asymmetry in the helicity densities of the light sea evaluated at $Q02=2.5\,\GeV2$. The data are compared with predictions in the $\chi$QSM and a meson cloud model \cite{Cao:2003}. The solid line with the surrounding shaded band show the $\chi$QSM prediction together with its $\pm 1\,\sigma$ uncertainties while the dash--dotted line shows the prediction in the meson cloud model. The uncertainties in the data are presented as in Fig. 19 Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-056 DELTA-Q |
The quark helicity distributions $x\,\Delta q(x,Q02)$ evaluated at a common value of $Q20=2.5\,\GeV2$ as a function of $x$. The dashed line is the GRSV2000 parameterization (LO, valence scenario) scaled with $1/(1+R)$ and the dashed--dotted line is the Bl\"umlein--B\"ottcher (BB) parameterization (LO, scenario 1) Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-055 DELTA-Q |
The quark polarizations in the 5 parameter $\times$ 9 $x$--bins fit. The polarizations, shown as a function of $x$, were computed from the HERMES inclusive and semi--inclusive asymmetries. The error bars are the statistical uncertainties. The band represents the total systematic uncertainty, where the light gray area is the systematic error due to the uncertainties on the fragmentation model, and the dark gray area is from the contribution of the Born asymmetries Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-054 DELTA-Q |
Purities for positive and negative pions and kaons on a proton and a free neutron target. Each column corresponds to scattering off a certain quark flavor. The shaded bands indicate the estimated systematic uncertainties due to the fragmentation parameters. The estimate derives from a comparison of two parameter sets Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-053 DELTA-Q |
Multiplicities of charged pions and kaons in the HERMES acceptance compared with Monte Carlo data as function of $z$. Statistical uncertainties in the data are too small to be visible. The multiplicities shown were not corrected for radiative and instrumental effects Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-052 DELTA-Q |
Born level Monte Carlo asymmetries on the proton in the experimental acceptance and in $4\pi$. The left hand plot compares the semi--inclusive asymmetries $A_{1,p}^{\pi^+}$ and the right hand plot the semi--inclusive asymmetries $A_{1,p}^{\pi^-}$. The asymmetries in the experimental acceptance also include the hadron momentum cut. For display purposes the full data points have been offset horizontally. The lower panels present the same data in the form of the difference in the asymmetries divided by the total experimental uncertainty $\sigma_{born}$ in the corresponding measured Born asymmetry Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-051 DELTA-Q |
The semi--inclusive Born asymmetries for positive and negative pion production on the proton as a function of $z$. The error bars indicate the statistical uncertainties and the error band represents the systematic uncertainties. The solid line is the z dependence from the Monte Carlo simulation of the asymmetries Mar 28, 2005 *BW (eps) *BW (pdf) *Data |
M. Beckmann
final |
|
05-050 DELTA-Q |
The inclusive and semi--inclusive Born level asymmetries on the deuteron. One data point at $x = 0.45$ for the $K^-$ asymmetry including its large error bar is outside the displayed range; all data points are listed in XIII Mar 28, 2005 *Colour (eps) *BW (eps) *Colour (pdf) *BW (pdf) *Data |
M. Beckmann
final |
|
05-049 DELTA-Q |
The inclusive and semi--inclusive Born level asymmetries on the proton, corrected for instrumental smearing and QED radiative effects. The error bars give the statistical uncertainties, and the shaded bands indicate the systematic uncertainty. The open squares show the positive and negative hadron asymmetries measured by the SMC collaboration, limited to the HERMES $x$--range Mar 28, 2005 *Colour (eps) *BW (eps) *BW (pdf) *Data |
M. Beckmann
final |
|
05-048 DELTA-Q |
Uncertainty inflation caused by detector smearing and QED radiative effects. The left hand panel shows the uncertainty inflation of the inclusive asymmetry for the proton and the right hand panel that of the positive pion asymmetry. In both panels the open triangles present the uncertainty inflation caused by detector effects, the open squares present the inflation caused by QED radiative effects, and the filled circles show the total uncertainty inflation Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-047 DELTA-Q |
The observed asymmetries $A_\|$ and $A_\|^{\pi^+}$ on the proton target compared with the corresponding Born asymmetries. The Born asymmetries are offset horizontally for better presentation. See the text for details Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-046 DELTA-Q |
Cerenkov angles associated with the three particle hypotheses as a function of the particle momentum. The characteristic angles of \v{C}erenkov light emitted in the aerogel ($n=1.03$) are given by the solid lines. The characteristic angles for emission in the gas ($n=1.0014$) are shown as the dashed lines. The corresponding histogram entries are experimentally determined angles of a sample of SIDIS hadrons Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-045 DELTA-Q |
Identification efficiency and hadron contamination of the DIS lepton sample as a function of $x$. Because correlations between the responses of the PID detectors were neglected, the contaminations are uncertain by a factor of two. The deuteron data have slightly worse efficiencies and contaminations because of the better hadron--lepton discrimination of the threshold \v{C}erenkov counter compared to the RICH Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-044 DELTA-Q |
The distribution of the total $\mathrm{PID}$ value. This logarithmic ratio of probabilities includes the particle fluxes and the responses of all PID detectors. The left hand peak is the hadron peak, while the right hand peak originates from leptons. The limits that were applied in the analysis are shown as vertical lines Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-043 DELTA-Q |
Two--dimensional distribution of PID values for all particles in the acceptance. The quantities $\mathrm{PID3}$ and $\mathrm{PID5}$ are defined as $\mathrm{PID3}\equiv\mathrm{PID}_{cal}+\mathrm{PID}_{pre} +\mathrm{PID}_{ric}$ and $\mathrm{PID5}\equiv\mathrm{PID}_{trd} Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-042 DELTA-Q |
Tracking system resolution for lepton and hadron tracks for the detector configuration used since 1998. In the left panel the relative momentum resolution is displayed, and the right panel shows the resolution in the horizontal scattering angle $\thetax$, both as a function of the track momentum $p$ Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-041 DELTA-Q |
Typical PID detector responses. The distributions are based on a small set of the data collected in 2000, except for the threshold \v{C}erenkov response, which was computed from a data set of similar size collected in 1997. The truncated mean is shown in the case of the TRD. The relative size of the lepton (dashed line) and hadron distributions (solid line) was scaled to the flux ratio in the respective data--taking periods to give a better idea of the level of contamination possible from each detector. The flux ratio of electrons to hadrons is typically $\sim 10\,\%$ for these data Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-040 DELTA-Q |
Side view of the HERMES spectrometer. The positron beam enters from the left. The spectrometer is split into two halves, one above the beam and one below, by a flux exclusion plate to protect the beams from the magnetic field. See the text for further details on the detectors Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-039 DELTA-Q |
Diagram of the HERMES polarized target. Shown are the atomic beam source (ABS), the target gas analyzer (TGA) and the Breit--Rabi polarimeter (BRP). SFT, MFT, and WFT label the strong, medium, and weak field transitions in the ABS and the BRP Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-038 DELTA-Q |
Schematic diagram of the HERA accelerator layout until 2000 with the location of the four experiments. Also shown are the locations of the spin--rotators and the two polarimeters Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-037 DELTA-Q |
Diagram of the deep-inelastic scattering process. The incoming lepton emits a virtual photon which is absorbed by one of the quarks in the nucleon. In the case depicted, the struck quark fragments into a pion in the final state. In semi--inclusive processes, the scattered lepton and part of the hadronic final state are detected in coincidence Mar 28, 2005 *BW (eps) *BW (pdf) |
M. Beckmann
final |
|
05-036 EXPERIMENT target |
The BRP measurements for the 2002/03 data taking period Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-035 EXPERIMENT target |
The TGA measurements for the 2002/03 data taking period Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
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05-034 EXPERIMENT target |
A temperature scan with hydrogen taken in 1997 Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-033 EXPERIMENT target |
Measured atomic fraction as a function of the cell temperature for $T_{cell}<100\,$K for the deuterium running in 2000. No dependence on the temperature can be seen. The working temperature during normal operation was set to $T_{cell}=60\,$K Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-032 EXPERIMENT target |
Nuclear vector polarization $Pz^{BRP}$ as function of the cell temperature T measured in August 2000. No dependence on the temperature is observed. The operating temperature of the target during data collection was 60K Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-031 EXPERIMENT target |
Vector/tensor polarization, $P^{BRP}$, measured by BRP during the year 2000 running period. Each symbol represents data averaged over a 72-hour bin. The tensor polarization (lower plot) was employed from July on Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-030 EXPERIMENT target |
Atomic fraction, $\alpha^{TGA}$ measured by TGA during the year 2000 running period. Each symbol represents data averaged over a 72-hour bin. The absolute bin averaged values are always above 0.9 Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-029 EXPERIMENT target |
The TGA measurements for the entire 1997 data taking period. The vertical dashed lines indicate HERA beam loss events which affected the cell surface properties, and the solid line indicates the replacement of the target cell Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-028 EXPERIMENT target |
The TGA measurements for the entire 1997 data taking period. The vertical dashed lines indicate HERA beam loss events which affected the cell surface properties, and the solid line indicates the replacement of the target cell Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
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05-027 EXPERIMENT target |
Simulated correlation between the values measured by the TGA or BRP detectors and their corresponding density-weighted average values in the storage cell. The three solid curves represent the three scenarios for the state of the cell surface: homogeneous cell (HC), homogeneous beam tube (HBT), and inhomogeneous beam tube (IBT). The left figure shows the range for recombination and the right picture shows the range for wall depolarization. Acceptable uncertainties of $\alphar$ and $\depol_{WD}$ (differences among the three horizontal dotted lines) can be achieved only with $\alphar^{TGA}$ and $\depol_{WD}^{BRP}$ close to unity (vertical dotted lines). The corresponding uncertainty grows rapidly with increasing recombination or depolarization Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
|
05-026 EXPERIMENT target |
Possible beam-induced nuclear depolarizing resonances in the HERMES target. The frequency difference between pairs of hyperfine states whose transitions lead to nuclear depolarization are plotted as a function of the holding field. The frequency values are normalized to $\nu_{HERA}=10.42\,$MHz. The symbols representing the resonance conditions are clearly distinguishable for the $\pi$ transitions, while they overlap with each other in the case of $\sigma$ and $\pi\ket{3}\leftrightarrow\ket{6}$ transitions, which are separated by a difference in the intensity of the holding field $\Delta BT$ of only 0.37\,mT. The dashed lines represent the working fields of the transversely (left) and longitudinally (right) polarized targets Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
|
05-025 EXPERIMENT target |
Measured fractional hyperfine populations vs. magnetic field for hydrogen for the various injection modes. The measured values are given by symbols, while the lines show a fit using the solutions of equation 28 Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-024 EXPERIMENT target |
Schematic layout of the BRP. The rf-transition units extend from z = 600 to 810 mm. The beam blocker at the entrance to the first 6-pole magnet ensures 100% rejection of atoms with $ms=-\frac{1}{2}$. The beam shutter is used to measure the hydrogen contribution coming from dissociative water ionization Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-023 EXPERIMENT target |
Time spectrum of atomic count rates in the TGA. The vertical lines indicate the binning used to define the chopper positions open, undefined and closed Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-022 EXPERIMENT target |
Schematic view of the BRP/TGA vacuum system Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-021 EXPERIMENT target |
A schematic diagram of the Target Gas Analyzer. The gas of atoms and molecules diffuses through the extension tube and is collimated by two baffles before entering the ionizing volume. The chopper is used for background subtraction Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-020 EXPERIMENT target |
Hyperfine energy levels of hydrogen (left) and deuterium (right) atoms as a function of the magnetic holding field (Breit-Rabi diagram) and corresponding labeling. The field values are scaled with the corresponding critical field and energy values with the corresponding hyperfine energy Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-019 EXPERIMENT target |
Schematic view (from downstream of the electron beam) of the HERMES ABS with dissociator and collimator for beam formation. Two sets of sextupole magnets are located along the beam axis as are the high-frequency transitions. The axis of the ABS is tilted by $30^\circ$ downwards with respect to the horizontal plane Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-018 EXPERIMENT target |
The storage cell and its support flange Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-017 EXPERIMENT target |
Transverse magnet field uniformity measured along the {\it{z}} axis at the nominal field strength B=297 mT. Deviations of \Delta By=0.15 mT (vert.) and \Delta Bx=0.60 mT (horiz.) have been measured within the cell volume Mar 28, 2005 *Colour (eps) *Colour (pdf) |
P. Lenisa
final |
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05-016 EXPERIMENT target |
Field strength of the longitudinal target magnet measured along the HERA beam direction {\it{z}}, covering the full length of the storage cell. The line shows a polynomial fit to the measurement Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-015 EXPERIMENT target |
Longitudinal target chamber and superconducting magnet viewed from downstream with respect to the HERA beam direction (left), and from above (right) Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-014 EXPERIMENT target |
Schematic view of the HERMES longitudinally polarized target. From left to right: Atomic Beam Source (ABS), target chamber with cell and magnet, and diagnostic system composed by Target Gas Analyzer (TGA) and Breit-Rabi Polarimeter (BRP). The locations of the radio-frequency transition (RFT) units are indicated Mar 28, 2005 *BW (eps) *BW (pdf) |
P. Lenisa
final |
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05-013 EXOTICS pentaquark |
Invariant mass distribution of the p\pi^-\pi^-\pi^+$(plus c.c.) system, subject to the constraints in event topology discussed in the text. The mixed-event background is represented by the gray shaded histogram, which is normalized to the background component of the fitted curve described in the text. The arrow shows the hypothetical \Xi^{0}_{3/2} mass. The excess near 1.77GeV has a statistical significance of only 1.8 \sigma Mar 28, 2005 &nb | |
