QCD power corrections from a simple model for the running coupling

被引：0
|
作者：
Webber, BR [1 ]
机构：
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 1998年 / 10期
关键词：
QCD; phenomenological models; nonperturbative effects;
D O I：
暂无
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 simple parametrization of the QCD running coupling at low scales is introduced and used to illustrate various schemes for the estimation of non-perturbative power corrections. The `infrared matching' scheme proposed earlier gives satisfactory results when combined with next-to-leading (or higher) order perturbative predictions. Estimates based on renormalons are shown to be inconsistent with universal behaviour of the running coupling.
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页数：14
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