GLUON AND CHARM DISTRIBUTIONS IN THE PHOTON

被引：39

作者：

HAGIWARA, K ^{[1
]}

TANAKA, M ^{[1
]}

WATANABE, I ^{[1
]}

IZUBUCHI, T ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW D | 1995年 / 51卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.51.3197

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study systematically the sensitivity of the photon structure function data on the gluon contents of the photon, by using the leading order Altarelli-Parisi (AP) equations. The charm quark contribution is studied in the quark parton model and by using the massive quark AP equations of Glück, Hoffmann, and Reya. The present photon structure function data are found to allow a wide range of gluon distributions in the photon. We give a set of six scale-dependent parton distributions in the photon (WHIT1 to WHIT6), which have systematically different gluon contents. The sensitivity of the structure function at small x and that of the total charm quark production cross section to the effective gluon distribution are discussed. © 1995 The American Physical Society.

引用

页码：3197 / 3219

页数：23

共 59 条

[1] PARAMETRIZATION OF PARTON DISTRIBUTIONS IN THE PHOTON [J].