First Look at Two-Loop Five-Gluon Scattering in QCD

被引：85
作者：
Badger, Simon [1 ]
Bronnum-Hansen, Christian [2 ]
Hartanto, Heribertus Bayu [1 ]
Peraro, Tiziano [3 ]
机构：
[1] Univ Durham, Inst Particle Phys Phenomenol, Dept Phys, Durham DH1 3LE, England
[2] Univ Edinburgh, Sch Phys & Astron, Higgs Ctr Theoret Phys, Edinburgh EH9 3JZ, Midlothian, Scotland
[3] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55128 Mainz, Germany
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 09期
基金：
欧洲研究理事会;
关键词：
ONE-LOOP AMPLITUDES; INTEGRALS; REDUCTION; UNITARITY;
D O I：
10.1103/PhysRevLett.120.092001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We compute the leading-color contributions to five-gluon scattering at two loops in massless QCD. The integrands of all independent helicity amplitudes are evaluated using d-dimensional generalized unitarity cuts and finite field reconstruction techniques. Numerical evaluation of the integral basis is performed with sector decomposition methods to obtain the first benchmark results for all helicity configurations of a 2 -> 3 scattering process in QCD.
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页数：6
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