QCD sum rules and models for generalized parton distributions

被引：5
|
作者：
Radyushkin, A [1 ]
机构：
[1] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA
[2] Jefferson Lab, Theory Grp, Newport News, VA 23606 USA
来源：
ANNALEN DER PHYSIK | 2004年 / 13卷 / 11-12期
关键词：
quantum chromodynamics; generalized parton distributions; QCD sum rules;
D O I：
10.1002/andp.200410114
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
I use QCD sum rule ideas to construct models for generalized parton distributions. To this end, the perturbative parts of QCD sum rules for the pion and nucleon electromagnetic form factors are interpreted in terms of GPDs and two models are discussed. One of them takes the double Borel transform at adjusted value of the Borel parameter as a model for nonforward parton densities, and another is based on the local duality relation. Possible ways of improving these Ansatze are briefly discussed. (C) 2004 WILEY-VCH Verlag GmbH & Co, KGaA, Weinheim.
引用
收藏
页码：718 / 730
页数：13
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