A SCREENED SPIN SUM-RULE

被引：7
|
作者：
BALL, RD
机构：
[1] Department of Theoretical Physics, University of Oxford, Oxford, OX1 3NP
来源：
PHYSICS LETTERS B | 1991年 / 266卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(91)91072-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show that the flavor singlet contribution of the constituents of the nucleon to the first moment of the spin structure function is suppressed logarithmically in the deep inelastic limit, due to a nonperturbative screening mechanism catalysed by the axial anomaly. This modifies the Ellis-Jaffe sum rule, resolving the proton "spin crisis" without invoking large intrinsic strange quark or hard gluon contributions.
引用
收藏
页码：473 / 481
页数：9
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