The real–virtual antenna functions for S→QQ¯X at NNLO QCD

The real–virtual antenna functions for S→QQ¯X at NNLO QCD

We determine, in the antenna subtraction framework for handling infrared divergences in higher order QCD calculations, the real–virtual antenna functions for processes involving the production of a pair of massive quarks by an uncolored initial state at NNLO QCD. The integrated leading and subleadin...

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Main Authors: Oliver Dekkers, Werner Bernreuther
Format: Article
Language:English
Published: Elsevier 2014-11-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269314007187
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spelling doaj-b74dff3781d14ce6ab40aac902df9fda2020-11-24T23:40:54ZengElsevierPhysics Letters B0370-26932014-11-01738325333The real–virtual antenna functions for S→QQ¯X at NNLO QCDOliver Dekkers0Werner Bernreuther1PRISMA Cluster of Excellence and Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, GermanyInstitut für Theoretische Physik, RWTH Aachen University, 52056 Aachen, Germany; Corresponding author.We determine, in the antenna subtraction framework for handling infrared divergences in higher order QCD calculations, the real–virtual antenna functions for processes involving the production of a pair of massive quarks by an uncolored initial state at NNLO QCD. The integrated leading and subleading color real–virtual antenna functions are computed analytically in terms of (cyclotomic) harmonic polylogarithms. As a by-product and check we compute RQ=σ(e+e−→γ⁎→QQ¯X)/σ(e+e−→γ⁎→μ+μ−) and compare with existing results. Our result for RQ is exact to order αs2. Keywords: QCD, NNLO computations, Subtraction methodshttp://www.sciencedirect.com/science/article/pii/S0370269314007187
collection DOAJ
language English
format Article
sources DOAJ
author Oliver Dekkers
Werner Bernreuther
spellingShingle Oliver Dekkers
Werner Bernreuther
The real–virtual antenna functions for S→QQ¯X at NNLO QCD
Physics Letters B
author_facet Oliver Dekkers
Werner Bernreuther
author_sort Oliver Dekkers
title The real–virtual antenna functions for S→QQ¯X at NNLO QCD
title_short The real–virtual antenna functions for S→QQ¯X at NNLO QCD
title_full The real–virtual antenna functions for S→QQ¯X at NNLO QCD
title_fullStr The real–virtual antenna functions for S→QQ¯X at NNLO QCD
title_full_unstemmed The real–virtual antenna functions for S→QQ¯X at NNLO QCD
title_sort real–virtual antenna functions for s→qq¯x at nnlo qcd
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2014-11-01
description We determine, in the antenna subtraction framework for handling infrared divergences in higher order QCD calculations, the real–virtual antenna functions for processes involving the production of a pair of massive quarks by an uncolored initial state at NNLO QCD. The integrated leading and subleading color real–virtual antenna functions are computed analytically in terms of (cyclotomic) harmonic polylogarithms. As a by-product and check we compute RQ=σ(e+e−→γ⁎→QQ¯X)/σ(e+e−→γ⁎→μ+μ−) and compare with existing results. Our result for RQ is exact to order αs2. Keywords: QCD, NNLO computations, Subtraction methods
url http://www.sciencedirect.com/science/article/pii/S0370269314007187
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AT wernerbernreuther therealvirtualantennafunctionsforsqqxatnnloqcd
AT oliverdekkers realvirtualantennafunctionsforsqqxatnnloqcd
AT wernerbernreuther realvirtualantennafunctionsforsqqxatnnloqcd
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