Impact-parameter dependence of the generalized parton distribution of the pion in chiral quark models

被引：0
|
作者：
Broniowski, W
Arriola, ER
机构：
[1] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[2] Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain
来源：
PHYSICS LETTERS B | 2003年 / 574卷 / 1-2期
关键词：
off-forward generalized parton distribution of the pion; chiral quark models; perturbative QCD evolution;
D O I：
10.1016/j.physletb.2003.09.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We compute the off-forward diagonal (non-skewed) non-singlet generalized parton distribution of the pion in two distinct chiral quark models: the Nambu-Jona-Lasinio model with the Pauli-Villars regulator and the spectral quark model. The analysis is carried out in the impact-parameter space. Leading-order perturbative QCD evolution is carried out via the inverse Mellin transform in the index space. The model predictions agree very reasonably with the recent results from transverse-lattice calculations, reproducing qualitatively both the Bjorken-x and the impact-parameter dependence of the data. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：57 / 64
页数：8
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