POLARIZED SEA-QUARK AND GLUON DISTRIBUTION-FUNCTIONS

被引：26

作者：

CHENG, HY

WAI, CF

机构：

[1] Institute of Physics, Academia Sinica, Taipei

来源：

PHYSICAL REVIEW D | 1992年 / 46卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.46.125

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With the phenomenologically determined valence-quark spin densities in conjunction with the positivity of the unpolarized parton distributions, we extract the polarized sea-quark (gluon) distribution necessary to interpret the European Muon Collaboration measurement of the polarized proton structure function g1p(x) in terms of sea quarks (gluons) alone. We then propose more realistic spin-dependent sea and gluon distribution functions which are parametrized in such a way that the first moment of g1p(x) receives almost all contributions from the region x > 0.01. A prediction of the polarized neutron structure function is given.

引用

页码：125 / 130

页数：6

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