High energy behaviour of form factors

High energy behaviour of form factors

Abstract We solve renormalization group equations that govern infrared divergences of massless and massive form factors. By comparing to recent results for planar massive three-loop and massless four-loop form factors in QCD, we give predictions for the high-energy limit of massive form factors at t...

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Main Authors: Taushif Ahmed, Johannes M. Henn, Matthias Steinhauser
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:Journal of High Energy Physics
Subjects:
NLO Computations
QCD Phenomenology
Online Access:http://link.springer.com/article/10.1007/JHEP06(2017)125
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spelling doaj-61f05592d7ba4c9e9c4c45324d2908c82020-11-25T00:34:36ZengSpringerOpenJournal of High Energy Physics1029-84792017-06-012017612110.1007/JHEP06(2017)125High energy behaviour of form factorsTaushif Ahmed0Johannes M. Henn1Matthias Steinhauser2Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)PRISMA Cluster of Excellence, Johannes Gutenberg UniversityInstitut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT)Abstract We solve renormalization group equations that govern infrared divergences of massless and massive form factors. By comparing to recent results for planar massive three-loop and massless four-loop form factors in QCD, we give predictions for the high-energy limit of massive form factors at the four- and for the massless form factor at five-loop order. Furthermore, we discuss the relation which connects infrared divergences regularized dimensionally and via a small quark mass and extend results present in the literature to higher order.http://link.springer.com/article/10.1007/JHEP06(2017)125NLO ComputationsQCD Phenomenology
collection DOAJ
language English
format Article
sources DOAJ
author Taushif Ahmed
Johannes M. Henn
Matthias Steinhauser
spellingShingle Taushif Ahmed
Johannes M. Henn
Matthias Steinhauser
High energy behaviour of form factors
Journal of High Energy Physics
NLO Computations
QCD Phenomenology
author_facet Taushif Ahmed
Johannes M. Henn
Matthias Steinhauser
author_sort Taushif Ahmed
title High energy behaviour of form factors
title_short High energy behaviour of form factors
title_full High energy behaviour of form factors
title_fullStr High energy behaviour of form factors
title_full_unstemmed High energy behaviour of form factors
title_sort high energy behaviour of form factors
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2017-06-01
description Abstract We solve renormalization group equations that govern infrared divergences of massless and massive form factors. By comparing to recent results for planar massive three-loop and massless four-loop form factors in QCD, we give predictions for the high-energy limit of massive form factors at the four- and for the massless form factor at five-loop order. Furthermore, we discuss the relation which connects infrared divergences regularized dimensionally and via a small quark mass and extend results present in the literature to higher order.
topic NLO Computations
QCD Phenomenology
url http://link.springer.com/article/10.1007/JHEP06(2017)125
work_keys_str_mv AT taushifahmed highenergybehaviourofformfactors
AT johannesmhenn highenergybehaviourofformfactors
AT matthiassteinhauser highenergybehaviourofformfactors
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