SMALL-X BEHAVIOR AND PARTON SATURATION - A QCD MODEL

被引：517
|
作者：
MUELLER, AH
机构：
[1] Physics Department, Columbia University, New York
来源：
NUCLEAR PHYSICS B | 1990年 / 335卷 / 01期
关键词：
D O I：
10.1016/0550-3213(90)90173-B
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：
A QCD model is defined to study questions of quark and gluon parton saturation at small x-values. The model uses a source consisting of a nucleus of heavy quarkonium bound states, states well understood in QCD. Deeply inelastic scattering, using the currents j(x) = - 1 4FμνaFμνa and jμ(x) = ψγμψ, is evaluated in Born and one-loop approximation in order to extract quark and gluon distributions. Quark distributions are observed to saturate while gluon distributions have a saturating and a nonsaturating component. © 1990.
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页码：115 / 137
页数：23
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