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

被引：53
|
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
收藏
页码：228 / 246
页数：19
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