TARGET MASS EFFECTS IN QCD BJORKEN SUM-RULE

被引：25
|
作者：
KAWAMURA, H
UEMATSU, T
机构：
[1] Department of Fundamental Sciences, FIHS, Kyoto University, Kyoto
来源：
PHYSICS LETTERS B | 1995年 / 343卷 / 1-4期
关键词：
D O I：
10.1016/0370-2693(94)01507-9
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the target mass effects in QCD Bjorken sum rule. The magnitude of the target mass correction is estimated in a variety of methods employing positivity bound as well as the experimental data for the asymmetry parameters. It turns out that the target mass correction is sizable at low Q(2) of the order of a few GeV2, where the QCD correction is significant. We show that there exists uncertainty due to target mass effects in determining the QCD effective coupling constant alpha(s)(Q(2)) from the Bjorken sum rule.
引用
收藏
页码：346 / 350
页数：5
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