Integral coefficients for one-loop amplitudes

被引：62
|
作者：
Britto, Ruth [1 ]
Feng, Bo [2 ]
机构：
[1] Univ Amsterdam, Inst Theoret Phys, Valckenierstr 65, NL-1018 XE Amsterdam, Netherlands
[2] Zhejiang Univ, Ctr Math Sci, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 02期
关键词：
NLO computations; QCD;
D O I：
10.1088/1126-6708/2008/02/095
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 present a set of algebraic functions for evaluating the coefficients of the scalar integral basis of a general one-loop amplitude. The functions are derived from unitarity cuts, but the complete cut-integral procedure has been carried out in generality so that it never needs to be repeated. Where the master integrals are known explicitly, the results here can be used as a black box with tree-level amplitudes as input and one-loop amplitudes as output.
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页数：30
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