Next-to-leading order evolution of generalized parton distributions for DESY HERA and HERMES

被引：28
作者：
Freund, A
McDermott, M
机构：
[1] Univ Regensburg, Inst Theoret Phys, D-93053 Regensburg, Germany
[2] Univ Liverpool, Dept Math Sci, Div Theoret Phys, Liverpool L69 3BX, Merseyside, England
来源：
PHYSICAL REVIEW D | 2002年 / 65卷 / 05期
关键词：
D O I：
10.1103/PhysRevD.65.056012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The QCD evolution of both unpolarized and Polarized generalized parton distributions (GPDs) to next-to-leading order (NLO) accuracy is presented, in both the DGLAP and ERBL regions, for two appropriately symmetrized input distributions based on conventional parton density functions. To illustrate the relative size of the NLO corrections a comparison is made with leading order evolution of the same distributions. For the first time, NLO results are given for both,,mail and large values of the skewedness parameter, zeta = x(bj), i.e., for all of the kinematic range relevant to DESY HERA and HERMES.
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