An Overview of Recent Deeply Virtual Compton Scattering Results at HERMES

被引：0
作者：
Mahon, David Francis [1 ]
机构：
[1] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
来源：
INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS | 2009年 / 1182卷
关键词：
DVCS; proton; deuteron;
D O I：
暂无
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：
We present recently-released HERMES Deeply Virtual Compton Scattering results of Beam-Helicity (formerly Beam-Spin, BSA) and Beam-Charge (BCA) asymmetries from unpolarised proton, deuteron and selected heavy nuclear gas targets. A new analysis technique utilising the ability of HERA to produce a longitudinally-polarised lepton beam of both charges has been used to simultaneously extract the BSA and BCA amplitudes arising from the DVCS-squared and Interference terms of the total cross section for proton and deuteron data. Results of the Transverse Target-Spin Asymmetry (TTSA) obtained using this technique have been published for transversely-polarised proton data. These extracted asymmetries are presented, integrated over the kinematic acceptance of the HERMES experiment for this interaction, with their dependences on -t,x(B) and Q(2) also shown. The results are compared with asymmetries from a phenomenological model of GPDs based on double distributions.
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页码：868 / 871
页数：4
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