Locally finite two-loop QCD amplitudes from IR universality for electroweak production

被引：9

作者：

Anastasiou, Charalampos ^{[1
]}

Sterman, George ^{[2
,3
]}

机构：

[1] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[2] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA

[3] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 05期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

Factorization; Renormalization Group; Higher-Order Perturbative Calculations; DOUBLE-REAL RADIATION; MASS DIVERGENCES; ANNIHILATION PROCESSES; PAIR PRODUCTION; QUARK; FACTORIZATION; BEHAVIOR; HADRON;

D O I：

10.1007/JHEP05(2023)242

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 describe the implementation of infrared subtractions for two-loop QCD corrections to quark-antiquark annihilation to electroweak final states. The subtractions are given as form-factor integrands whose integrals are known. The resulting subtracted amplitudes are amenable to efficient numerical integration. Our procedure is based on the universality of infrared singularities and requires a relatively limited set of subtractions, whose number grows as the number of two-loop diagrams, rather than with the number of singular regions of integration.

引用

页数：59

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