Use of dispersion relations in hard exclusive processes and the partonic interpretation of deeply virtual Compton scattering

被引:14
|
作者
Goldstein, Gary R. [1 ]
Liuti, Simonetta [2 ]
机构
[1] Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA
[2] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA
来源
PHYSICAL REVIEW D | 2009年 / 80卷 / 07期
关键词
D O I
10.1103/PhysRevD.80.071501
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recently dispersion relations have been applied to hard exclusive processes such as deeply virtual Compton scattering, and a holographic principle was proposed that maps out the generalized parton distributions entering the soft matrix elements for the processes from their values on a given kinematical ridge. We examine possible pitfalls associated with the implicit, direct identification in this approach of the physical hadronic states with colored partons, and suggest an improved treatment of this assumption.
引用
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页数:4
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