Exclusive deeply inelastic electroproduction at HERMES

被引：0
作者：
Lu, J [1 ]
机构：
[1] TRIUMF, Vancouver, BC V6T 2A3, Canada
来源：
GDH 2004: PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM ON THE GERASIMOV-DRELL-HEARN SUM RULE AND ITS EXTENSIONS | 2005年
关键词：
D O I：
10.1142/9789812702111_0027
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Asymmetries in beam charge, beam helicity and target polarization have been measured for hard exclusive electroproduction of photons, p(0) and pi(+) in HERMES. The asymmetries appear in the distribution of the photons or mesons in the azimuthal angle around the virtual photon direction, relative to the lepton scattering plane. Such asymmetries can constrain the Generalized Parton Distributions (GPDs) of the nucleon or nucleus. The experiment is performed at the DESY laboratory in Hamburg Germany, using 27.5 GeV positrons and electrons incident on hydrogen, deuterium and neon targets.
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页码：216 / 222
页数：7
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