Full-Color Two-Loop Four-Gluon Amplitude in N=2 Supersymmetric QCD

被引：10

作者：

Duhr, Claude ^{[1
,2
]}

Johansson, Henrik ^{[3
,4
,5
]}

Kalin, Gregor ^{[3
]}

Mogull, Gustav ^{[3
]}

Verbeek, Bram ^{[2
]}

机构：

[1] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[2] UCLouvain, Ctr Cosmol Particle Phys & Phenomenol CP3, Chemin Cyclotron 2, B-1348 Louvain La Neuve, Belgium

[3] Uppsala Univ, Dept Phys & Astron, S-75108 Sweden, Sweden

[4] Stockholm Univ, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

[5] KTH Royal Inst Technol, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 24期

基金：

瑞典研究理事会;

关键词：

4-POINT FUNCTIONS; FORM-FACTORS; BEHAVIOR; INTEGRALS;

D O I：

10.1103/PhysRevLett.123.241601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the fully integrated form of the two-loop four-gluon amplitude in N = 2 supersymmetric quantum chromodynamics with gauge group SU(N-c) and with N-f massless supersymmetric quarks (hypermultiplets) in the fundamental representation. Our result maintains full dependence on N-c and N-f, and relies on the existence of a compact integrand representation that exhibits the duality between color and kinematics. Specializing to the N = 2 superconformal theory, where N-f = 2N(c), we obtain remarkably simple amplitudes that have an analytic structure close to that of N = 4 super-Yang-Mills theory, except that now certain lower-weight terms appear. We comment on the corresponding results for other gauge groups.

引用

页数：7

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