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

Simple formula for the infrared singular part of the integrand of one-loop QCD amplitudes
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单环QCD振幅被积函数红外奇异部分的简单公式

DOI:
10.1103/physrevd.81.094002
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发表时间:
2009
期刊:
影响因子:
5
通讯作者:
S. Weinzierl
S. Weinzierl
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Assadsolimani;S. Becker;S. Weinzierl

文献摘要

被引文献

相似文献

我们证明了一个著名的简单公式的显式红外极点的单圈QCD振幅有一个相应的简单的对应的未积分形式。未积分公式近似的被积函数的单圈QCD振幅在所有软和共线奇异区域。因此,它定义了一个本地的反红外奇异项,并可以用作一个成分的数值计算的单圈振幅。
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.