Recent HERMES Results on DVCS from Proton and Nuclear Targets

YE Hong-xue; MAO Ya-jun  (on behalf of the HERMES Collaboration)

doi:10.11804/NuclPhysRev.26.S1.124

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Volume 26 Issue S1

May 2020

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Article Navigation > Nuclear Physics Review > 2009 > 26(5): 124-128

YE Hong-xue, MAO Ya-jun (on behalf of the HERMES Collaboration). Recent HERMES Results on DVCS from Proton and Nuclear Targets[J]. Nuclear Physics Review, 2009, 26(5): 124-128. doi: 10.11804/NuclPhysRev.26.S1.124

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YE Hong-xue, MAO Ya-jun (on behalf of the HERMES Collaboration). Recent HERMES Results on DVCS from Proton and Nuclear Targets[J]. Nuclear Physics Review, 2009, 26(5): 124-128. doi: 10.11804/NuclPhysRev.26.S1.124

Recent HERMES Results on DVCS from Proton and Nuclear Targets

doi: 10.11804/NuclPhysRev.26.S1.124

School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2020-05-11

Abstract

Spin structure is one of the fundamental subjects in the study of nucleon structure. Recently it is found that Generalized Parton Distributions(GPDs) are related to the total angular momentum carried by partons, which offers a possible solution to the spin puzzle in the first time. We get access to certain GPDs by looking at the azimuthal angle asymmetries attributed to the interference between Deeply Virtual Compton Scattering(DVCS) and BetheHeilter processes in HERMES experiment. By measuring the asymmetry with respect to transverse target polarization from proton target, a modeldependent constraint on Ju vs Jd is obtained. Another worldwide unique channel is nuclear DVCS. The preliminary results on asymmetries with respect to beam spin and beam charge are
reported.
- GPDs,
- DVCS,
- TTSA,
- nuclear DVCS
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Recent HERMES Results on DVCS from Proton and Nuclear Targets

doi: 10.11804/NuclPhysRev.26.S1.124

School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2020-05-11

Key words:

GPDs /
DVCS /
TTSA /
nuclear DVCS

Abstract: Spin structure is one of the fundamental subjects in the study of nucleon structure. Recently it is found that Generalized Parton Distributions(GPDs) are related to the total angular momentum carried by partons, which offers a possible solution to the spin puzzle in the first time. We get access to certain GPDs by looking at the azimuthal angle asymmetries attributed to the interference between Deeply Virtual Compton Scattering(DVCS) and BetheHeilter processes in HERMES experiment. By measuring the asymmetry with respect to transverse target polarization from proton target, a modeldependent constraint on Ju vs Jd is obtained. Another worldwide unique channel is nuclear DVCS. The preliminary results on asymmetries with respect to beam spin and beam charge are
reported.

Citation: