A planar four-loop form factor and cusp anomalous dimension in QCD

A bstract We compute the fermionic contribution to the photon-quark form factor to four-loop order in QCD in the planar limit in analytic form. From the divergent part of the latter the cusp and collinear anomalous dimensions are extracted. Results are also presented for the finite contribution. We...

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Published inThe journal of high energy physics Vol. 2016; no. 5; pp. 1 - 17
Main Authors Henn, Johannes M., Smirnov, Alexander V., Smirnov, Vladimir A., Steinhauser, Matthias
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2016
Subjects
Classical and Quantum Gravitation
Cusps
Elementary Particles
Form factors
Integrals
Mathematical analysis
Physics
Physics and Astronomy
Quantum chromodynamics
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Scattering Amplitudes
Perturbative QCD
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Summary:A bstract We compute the fermionic contribution to the photon-quark form factor to four-loop order in QCD in the planar limit in analytic form. From the divergent part of the latter the cusp and collinear anomalous dimensions are extracted. Results are also presented for the finite contribution. We briefly describe our method to compute all planar master integrals at four-loop order.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2016)066