hermes asymmetries | Azimuthal single hermes asymmetries Photon spin asymmetries for diffrac- tively produced vector mesons at HERMES (1996/97 T~ data). The outer error bars show the quadratic sum of the statistical (inner error . We deliver. We grow“ are deeply integrated in our services and activities. Customer service, its development and improvement from the flight reservation until arrival at the desired destination is one of our main goals and introduction of the Customer Service Commitment is another step to reach it.
0 · Transversity measurement at HERMES
1 · Transverse momentum, factorization and the HERMES
2 · Transverse Spin Physics at HERMES
3 · Results from the HERMES experiment
4 · Recent spin physics results from the HERMES experiment
5 · Overview of HERMES results on longitudinal spin
6 · Model predictions for azimuthal spin asymmetries for HERMES
7 · Kinematic Dependence of Longitudinal Double
8 · HERMES Results on the 3D Imaging of the Nucleon
9 · Azimuthal single
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Transversity measurement at HERMES
The measured asymmetries allow the extraction of the spin distributions for the up, down, and sea quarks, as shown in Fig. 5. The up quark polarisation is positive and that of the down quark is negative; their absolute values are largest at large x and remain different from . Photon spin asymmetries for diffrac- tively produced vector mesons at HERMES (1996/97 T~ data). The outer error bars show the quadratic sum of the statistical (inner error . Results from the HERMES experiment are presented on single-spin asymmetries in semi-inclusive hadron production from longitudinally polarised hydrogen and deuterium .HERMES published the results of longitudinal double-spin asymmetries for charged pi-ons and kaons produced in semi-inclusive DIS of electrons and positrons on hydrogen and deuterium .
Measurement of azimuthal asymmetries with respect to both beam charge and transverse target polarization in exclusive electroproduction of real photons. JHEP 06 , 066 . A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from .
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Azimuthal spin asymmetries in semi-inclusive deep inelastic scattering(SIDIS) have been observed in many experiments. Measurements of azimuthal asymmetries are important to .Here I shall be concerned with asymmetries relative to two types of experiments: a) SIDIS[10, 20, 21]: lp (p↑) → l′πX, l denoting a charged lepton; b) Electron-positron annihilation into two jets, . HERMES results on azimuthal single‐spin asymmetries in semi‐inclusive leptoproduction of pions and charged kaons from a transversely polarised hydrogen target are .A comprehensive collection of results on longitudinal double-spin asymmetries is presented for charged pions and kaons produced in semi-inclusive deep-inelastic scattering of electrons and .
HERMES results on azimuthal single-spin asymmetries in semi-inclusive leptoproduction of pions and charged kaons from a transversely polarised hydrogen target are presented. Abstract.Predictions are made for single spin azimuthal asymmetries due to the Collins effect in pion production from semi-inclusive deeply inelastic scattering off transversely and longitudinally polarized targets for the HERMES and COMPASS experiments. The x-dependence of the asymmetries is evaluated using the parton distribution functions from the chiral quark .
HERMES results on azimuthal single-spin asymmetries in semi-inclusive leptoproduction of pions and charged kaons from a transversely polarised hydrogen target are presented. Single-spin asymmetries were investigated in inclusive electroproduction of charged pions and kaons from transversely polarized protons at the Hermes experiment. The asymmetries were studied as a . 3 Spin asymmetries at HERMES. 3.1 General formulae. The HERMES experiments concern reaction (1). In particular, the exp eriment which. has been realized[10] employes a longitudinally polarized . To study these asymmetries in even more detail, the HERMES collaboration decided to run during its final phase from 2006 to 2007 with a new recoil detector in combination with an unpolarized target. The device will employ silicon detectors and scintillating fibre trackers as well as a detector to measure photons. It will sit closely around the .
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of the HERMES asymmetries [23] and the COMP ASS deuteron [17] and proton [32] results giv en here was performed taking into account the Q 2 evolution in all x bins. It reproduces all the data well and
with no switch modification. We have implemented Hermes with commodity switches and evaluated it through both testbed experi-ments and large-scale simulations. Our results show that Hermes achieves comparable performance to CONGA and Presto in normal cases, and well handles uncertainties: under asymmetries, Hermes HERMES has measured azimuthal single-spin asymmetries of pions and charged kaons produced in deep-inelastic scattering of electrons and positrons off a transversely polarized hydrogen target. The HERMES experiment has measured double spin asymmetries in the cross section for deep-inelastic scattering of longitudinal polarized positrons off longitudinal polarized hydrogen and deuterium .
Transverse momentum, factorization and the HERMES
2. Longitudinal double-spin asymmetries measured in semi-inclusive DIS HERMES published the results of longitudinal double-spin asymmetries for charged pi-ons and kaons produced in semi-inclusive DIS of electrons and positrons on hydrogen and deuterium targets, based on the full HERMES data set [1]. Although the analysis has muchPredictions for COMPASS and HERMES All the above asymmetries are functions of x, z, Ph⊥ , y and scale µ whereas the experimental measurements of asymmetries provide the variation of the integrated asymmetry with one variable at a time. Therefore one has to integrate the denominator and numerator separately over all the other variables except .
) are measured at HERMES. The asymmetries arise from the interference of DVCS with the Bethe-Heitler process, where DVCS provides the theoretically clean-est access to Generalized Parton Distributions. In 2006, HERMES was upgraded with a recoil detector that, together with the forward spectrometer, allowed the detection of all The measured asymmetries allow the extraction of the spin distributions for the up, down, and sea quarks, as shown in Fig. 5. The up quark polarisation is positive and that of the down quark is negative; their absolute values are largest at large x and remain different from zero in the sea region. Photon spin asymmetries for diffrac- tively produced vector mesons at HERMES (1996/97 T~ data). The outer error bars show the quadratic sum of the statistical (inner error bar) and systematic uncertainties. Results from the HERMES experiment are presented on single-spin asymmetries in semi-inclusive hadron production from longitudinally polarised hydrogen and deuterium targets. The azimuthal dependence of the asymmetries is discussed in relation to the transversity distribution and the data are compared with a number of theoretical calculations.
HERMES published the results of longitudinal double-spin asymmetries for charged pi-ons and kaons produced in semi-inclusive DIS of electrons and positrons on hydrogen and deuterium targets, based on the full HERMES data set [1]. Measurement of azimuthal asymmetries with respect to both beam charge and transverse target polarization in exclusive electroproduction of real photons. JHEP 06 , 066 (2008) Airapetian, A. et al.: (HERMES).
A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the previously published HERMES results on Collins and Sivers asymmetries, the analysis of which has been .
Azimuthal spin asymmetries in semi-inclusive deep inelastic scattering(SIDIS) have been observed in many experiments. Measurements of azimuthal asymmetries are important to understand the transverse structure of the proton. These asymmetries indicate existence of non-vanishingtransversemomentumofinteriorquarksandcollinearpictureusedforDISisnotHere I shall be concerned with asymmetries relative to two types of experiments: a) SIDIS[10, 20, 21]: lp (p↑) → l′πX, l denoting a charged lepton; b) Electron-positron annihilation into two jets, observing a final pion[4, 16]: (1) e+e− → πX; (2)
HERMES results on azimuthal single‐spin asymmetries in semi‐inclusive leptoproduction of pions and charged kaons from a transversely polarised hydrogen target are presented.
Transverse Spin Physics at HERMES
Results from the HERMES experiment
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hermes asymmetries|Azimuthal single
