The two-loop soft current in dimensional regularization

被引：88

作者：

Duhr, Claude ^{[1
,2
]}

Gehrmann, Thomas ^{[3
,4
]}

机构：

[1] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[2] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

[3] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland

[4] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICS LETTERS B | 2013年 / 727卷 / 4-5期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

QCD; NNNLO computations; EXPANDING HYPERGEOMETRIC-FUNCTIONS; ASYMPTOTIC-EXPANSION; MASTER INTEGRALS; JETS;

D O I：

10.1016/j.physletb.2013.10.063

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The soft current describes the factorization behavior of quantum chromodynamics (QCD) scattering amplitudes in the limit of vanishing energy of one of the external partons. It is process-independent and can be expanded in a perturbative series in the coupling constant. To all orders in the dimensional regularization parameter, we compute the two-loop correction to the soft current for processes involving two hard partons. (C) 2013 Published by Elsevier B.V.

引用

页码：452 / 455

页数：4

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