ON THE HEAVY-QUARK CONTENT OF THE NUCLEON

被引：64

作者：

LAENEN, E ^{[1
]}

RIEMERSMA, S ^{[1
]}

SMITH, J ^{[1
]}

VANNEERVEN, WL ^{[1
]}

机构：

[1] LEIDEN UNIV,INST LORENTZ,2300 RA LEIDEN,NETHERLANDS

来源：

PHYSICS LETTERS B | 1992年 / 291卷 / 03期

关键词：

D O I：

10.1016/0370-2693(92)91053-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently QCD corrections to the light (massless)-quark and heavy (massive)-quark structure functions of the proton have been computed up to O(alpha(s)2). Using these results we present the O(alpha(s)2) contributions to the ratio of the heavy-quark content of the nucleon with respect to the sum of the heavy-quark plus light-quark content for charm and bottom quarks. We find that, at small x, the heavy-quark fraction is surprisingly large and remarkably insensitive to changes in the mass factorization scale and/or the choice of parton densities.

引用

页码：325 / 328

页数：4

共 15 条

[1] QCD FORMULATION OF CHARM PRODUCTION IN DEEP-INELASTIC SCATTERING AND THE SEA-QUARK GLUON DICHOTOMY [J].