Simple formula for the infrared singular part of the integrand of one-loop QCD amplitudes

被引：28

作者：

Assadsolimani, Mohammad ^{[1
]}

Becker, Sebastian ^{[1
]}

Weinzierl, Stefan ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 09期

关键词：

CROSS-SECTIONS; SOFT;

D O I：

10.1103/PhysRevD.81.094002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that a well-known simple formula for the explicit infrared poles of one-loop QCD amplitudes has a corresponding simple counterpart in unintegrated form. The unintegrated formula approximates the integrand of one-loop QCD amplitudes in all soft and collinear singular regions. It thus defines a local counterterm for the infrared singularities and can be used as an ingredient for the numerical calculation of one-loop amplitudes.

引用

页数：5

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