PERTURBATIVE VERSUS ASYMPTOTIC FREEDOM CORRECTIONS IN DRELL-YAN PROCESSES

被引：7

作者：

ABAD, J ^{[1
]}

HUMPERT, B ^{[1
]}

VANNEERVEN, WL ^{[1
]}

机构：

[1] CERN,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1979年 / 83卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(79)91130-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a comparison between exact lowest order on-shell perturbation theory (PT), leading-log asymptotic freedom (AF), and non-log improved AF in pp-initiated Drell-Yan μ+μ--production. In leading-log approximation PT reproduces the qualitative τ-and Q2-characteristics of AF. In PT and AF qp-annihilation is dominated by the very large non-log contribution whereas the non-log qg-term does not invalidate AF. © 1979.

引用

页码：371 / 374

页数：4