The infrared structure of perturbative gauge theories

被引：31

作者：

Agarwal, Neelima ^{[1
]}

Magnea, Lorenzo ^{[2
,3
,4
,5
]}

Signorile-Signorile, Chiara ^{[6
]}

Tripathi, Anurag ^{[7
]}

机构：

[1] Chaitanya Bharathi Inst Technol, Dept Phys, Hyderabad 500075, Telangana, India

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

[3] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy

[4] Univ Torino, Arnold Regge Ctr, Via P Giuria1, I-10125 Turin, Italy

[5] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy

[6] Karlsruher Inst Technol KIT, Inst Astroteilchenphys, D-76021 Karlsruhe, Germany

[7] IIT Hyderabad, Dept Phys, Sangareddy 502284, Telangana, India

来源：

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS | 2023年 / 994卷

关键词：

Quantum field theory; Gauge theories; Perturbative QCD; Infrared divergences; 2-LOOP QCD CORRECTIONS; 3-LOOP SPLITTING FUNCTIONS; JET CROSS-SECTIONS; SOFT-PHOTON STATES; COLLINEAR EFFECTIVE THEORY; DEEP-INELASTIC-SCATTERING; HIGHER-ORDER CORRECTIONS; HIGH-ENERGY SCATTERING; SUDAKOV FORM-FACTOR; COHERENT-STATE;

D O I：

10.1016/j.physrep.2022.10.001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Infrared divergences in the perturbative expansion of gauge theory amplitudes and cross sections have been a focus of theoretical investigations for almost a century. New insights still continue to emerge, as higher perturbative orders are explored, and high -precision phenomenological applications demand an ever more refined understanding. This review aims to provide a pedagogical overview of the subject. We briefly cover some of the early historical results, we provide some simple examples of low-order applications in the context of perturbative QCD, and discuss the necessary tools to extend these results to all perturbative orders. Finally, we describe recent developments concerning the calculation of soft anomalous dimensions in multi-particle scattering amplitudes at high orders, and we provide a brief introduction to the very active field of infrared subtraction for the calculation of differential distributions at colliders.(c) 2022 elsevier B.V ALL right resserved

引用

页码：1 / 120

页数：120

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[1] Cuts from residues: the one-loop case [J].