Singlet g2 structure function in the next-to-leading order -: art. no. 094012

被引：27
|
作者：
Belitsky, AV [1 ]
Ji, XD
Lu, W
Osborne, J
机构：
[1] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA
[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
来源：
PHYSICAL REVIEW D | 2001年 / 63卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.63.094012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Following a previous study of the one-loop factorization of the nonsinglet g(2) structure function of the nucleon, we present in this paper the next-to-leading order coefficient functions in the singlet sector. To obtain the result, the partonic processes of virtual Compton scattering off two and three on-shell gluons are calculated. A key step in achieving the correct factorization is to separate the correct twist-two contribution. The Burkardt-Cottingham sum rule is nominally satisfied at this order.
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页数：6
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