Numerical NLO QCD calculations

被引：0
|
作者：
Sebastian Becker
Christian Reuschle
Stefan Weinzierl
机构：
[1] Universität Mainz,Institut für Physik
来源：
Journal of High Energy Physics | / 2010卷
关键词：
Jets; NLO Computations; QCD;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present an algorithm for the numerical calculation of one-loop QCD amplitudes. The algorithm consists of subtraction terms, approximating the soft, collinear and ultraviolet divergences of one-loop amplitudes and a method to deform the integration contour for the loop integration into the complex space. The algorithm is formulated at the amplitude level and does not rely on Feynman graphs. Therefore all required ingredients can be calculated efficiently using recurrence relations. The algorithm applies to massless partons as well as to massive partons.
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