Target mass corrections for spin-dependent structure functions in collinear factorization

被引：27

作者：

Accardi, Alberto ^{[2
]}

Melnitchouk, W. ^{[1
]}

机构：

[1] Jefferson Lab, Newport News, VA 23606 USA

[2] Hampton Univ, Hampton, VA 23668 USA

来源：

PHYSICS LETTERS B | 2008年 / 670卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2008.10.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive target mass corrections (TMC) for the spin-dependent nucleon structure function g(1) and polarization asymmetry A(1) in collinear factorization at leading twist. The TMCs are found to be significant for g(1) at large x(B), even at relatively high Q(2) values, but largely cancel in A(1). A comparison of TMCs obtained from collinear factorization and from the operator product expansion shows that at low Q(2) the corrections drive the proton A(1) in opposite directions. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：114 / 118

页数：5

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