PHOTONIC PARTON DISTRIBUTIONS

被引：563

作者：

GLUCK, M

REYA, E

VOGT, A

机构：

[1] Institut f̈r Physik, Universität Dortmund

来源：

PHYSICAL REVIEW D | 1992年 / 46卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.46.1973

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The quark and gluon distributions of the photon are determined in leading and higher order by imposing a vector-meson dominance (VMD) valencelike structure at a low resolution scale adopted from the pion. This leaves only one free parameter, not sufficiently constrained by VMD, to be fixed by experiment. Our predictions are in agreement with presently available data for F2-gamma(x,Q2). Simple parametrizations of the resulting parton distributions are presented in the range 10(-5) less than or similar to x < 1, 0.3 less than or similar to Q2 less than or similar to 10(6) GeV2 as obtained from the leading- and higher-order evolution equations.

引用

页码：1973 / 1979

页数：7

共 31 条

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