The singular behavior of one-loop massive QCD amplitudes with one external soft gluon

被引：52

作者：

Bierenbaum, Isabella ^{[2
]}

Czakon, Michal ^{[2
]}

Mitov, Alexander ^{[1
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Rhein Westfal TH Aachen, Inst Theoret Teilchenphys & Kosmol, D-52056 Aachen, Germany

来源：

NUCLEAR PHYSICS B | 2012年 / 856卷 / 02期

基金：

美国国家科学基金会;

关键词：

JET CROSS-SECTIONS; HIGHER-ORDER CORRECTIONS; DOUBLE-REAL RADIATION; TRANSCENDENTAL FUNCTIONS; EXPANSION;

D O I：

10.1016/j.nuclphysb.2011.11.002

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：

We calculate the one-loop correction to the soft-gluon current with massive fermions. This current is process independent and controls the singular behavior of one-loop massive QCD amplitudes in the limit when one external gluon becomes soft. The result derived in this work is the last missing process-independent ingredient needed for numerical evaluation of observables with massive fermions at hadron colliders at the next-to-next-to-leading order. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：228 / 246

页数：19

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