Next-to-leading order determination of the singlet axial charge and the polarized gluon content of the nucleon

被引：138

作者：

Ball, RD

Forte, S

Ridolfi, G

机构：

[1] UNIV EDINBURGH, DEPT PHYS & ASTRON, EDINBURGH EH9 3JZ, MIDLOTHIAN, SCOTLAND

[2] IST NAZL FIS NUCL, SEZ GENOVA, I-16146 GENOA, ITALY

来源：

PHYSICS LETTERS B | 1996年 / 378卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(96)00376-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a full next-to-leading analysis of the the available experimental data on the polarized structure function g(1) of the nucleon, and give a precise determination of its singlet axial charge together with a thorough assessment of the theoretical uncertainties, We find that the data are now sufficient to separately determine first moments of the polarized quark and gluon distributions, and show in particular that the gluon contribution is large and positive.

引用

页码：255 / 266

页数：12

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