The unitarity method using a canonical basis approach

被引：15
作者：
Dunbar, David C. [1 ]
Perkins, Warren B. [1 ]
Warrick, Edmund [1 ]
机构：
[1] Univ Coll Swansea, Dept Phys, Swansea, W Glam, Wales
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2009年 / 06期
基金：
英国科学技术设施理事会;
关键词：
NLO Computations; Supersymmetric gauge theory; QCD; ONE-LOOP AMPLITUDES; GAUGE-THEORY; HELICITY AMPLITUDES; TREE AMPLITUDES; SINGULARITIES; QCD; CUT;
D O I：
10.1088/1126-6708/2009/06/056
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：
Various implementations of the Unitrarity method have been developed to compute one-loop amplitudes in gauge theories. In this paper we present an implementation which uses canonical forms to generate the rational coefficients of the basis integral functions. As an example, we present the results for the N = 1 contribution to seven gluon scattering in closed, rational, analytic form.
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页数：41
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