ON THE UNIVERSALITY OF THE LEADING, 1/Q POWER CORRECTIONS IN QCD

被引：106

作者：

AKHOURY, R ^{[1
]}

ZAKHAROV, VI ^{[1
]}

机构：

[1] UNIV MICHIGAN,RANDALL LAB PHYS,ANN ARBOR,MI 48109

来源：

PHYSICS LETTERS B | 1995年 / 357卷 / 04期

关键词：

D O I：

10.1016/0370-2693(95)00866-J

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss 1/Q corrections to hard processes in QCD where Q is a large mass parameter like the total energy in e(+)e(-) annihilation. The main problem we address ourselves to is whether these corrections to different processes (concentrating for definiteness on the certain event shape variables and the Drell-Yan cross section) can be related to each other in a reliable way so that the phenomenology of the 1/Q corrections can be developed. We derive first the relation valid to lowest order using both the renormalon and finite-gauge-boson mass techniques to check its independence on the infrared cut-off procedure. We then argue that the 1/Q corrections are due to soft gluons which factorize into a universal factor such that the lowest order relations are preserved in higher orders.

引用

页码：646 / 652

页数：7

共 17 条

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