THE EVOLUTION OF PARTON DISTRIBUTIONS AT SMALL-X

被引：108

作者：

ELLIS, RK ^{[1
]}

KUNSZT, Z ^{[1
]}

LEVIN, EM ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL,CH-8093 ZURICH,SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1994年 / 420卷 / 03期

关键词：

D O I：

10.1016/0550-3213(94)90076-0

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate parton distributions at small x using moments of the Gribov-Lipatov-Altarelli-Parisi (GLAP) evolution equation with respect to x. In this representation the kernel of the GLAP equation contains singularities in the moment variable omega at omega = 0. We show that the importance of these singularities at small x depends on the form of the starting distributions. We examine the range of x in which the GLAP equation is valid. The restrictions on the range of x depend on the form of the starting distributions. We investigate whether the GLAP equation can be used to interpolate data in the HERA region. Results are given for the structure function F2 at small x. A possible method of determining the gluon distribution from F2 is discussed.

引用

页码：517 / 549

页数：33

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[2]

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