Pion production in deeply virtual Compton scattering -: art. no. 034018

被引：28
作者：
Guichon, PAM [1 ]
Mossé, L
Vanderhaeghen, M
机构：
[1] CEA Saclay, SPhN, DAPNIA, F-91191 Gif Sur Yvette, France
[2] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
来源：
PHYSICAL REVIEW D | 2003年 / 68卷 / 03期
关键词：
D O I：
10.1103/PhysRevD.68.034018
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using a soft pion theorem based on chiral symmetry and a Delta(1232) resonance model, we propose an estimate for the production cross section of low energy pions in the deeply virtual Compton scattering (DVCS) process. In particular, we express the ep-->egammapiN processes in terms of generalized parton distributions. We provide estimates of the contamination of the ep-->egammap DVCS observables due to this associated pion production process when the experimental data are not fully exclusive, for a set of kinematical conditions representative of present or planned experiments at JLab, HERMES, and COMPASS.
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页数：21
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