The polarized photon structure function g1γ (x, Q2) in massive parton model in NLO

被引：3
|
作者：
Watanabe, Norihisa [1 ]
Kiyo, Yuichiro [2 ]
Sasaki, Ken [1 ]
机构：
[1] Yokohama Natl Univ, Fac Engn, Dept Phys, Yokohama, Kanagawa 2408501, Japan
[2] Tohoku Univ, Fac Sci, Dept Phys, Sendai, Miyagi 9800845, Japan
来源：
PHYSICS LETTERS B | 2012年 / 707卷 / 01期
关键词：
DEPENDENT STRUCTURE FUNCTIONS; SUM-RULE; QUARK PRODUCTION; QCD CORRECTIONS; SPIN; INTEGRATION;
D O I：
10.1016/j.physletb.2011.12.036
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the one-gluon-exchange (alpha alpha(s)) corrections to the polarized real photon structure function g(1)(gamma) (x, Q(2)) in the massive parton model. We employ a technique based on the Cutkosky rules and the reduction of Feynman integrals to master integrals. The NLO contribution is noticeable at large x and does not vanish at the threshold of the massive quark pair production due to the Coulomb singularity. It is found that the first moment sum rule of g(1)(gamma) is satisfied up to the NLO. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：146 / 150
页数：5
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