SMALL-X BEHAVIOR AND PARTON SATURATION - A QCD MODEL

被引：519

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.

引用

页码：115 / 137

页数：23

共 16 条

[1]

ABRAMOVSKII VA, 1974, SOV J NUCL PHYS+, V18, P308

[2]

BJORKEN JD, 1973, PHYS REV, V28, P1341

[3] THE EARLY STAGE OF ULTRA-RELATIVISTIC HEAVY-ION COLLISIONS [J].