Photon pair production in gluon fusion: top quark effects at NLO with threshold matching

Photon pair production in gluon fusion: top quark effects at NLO with threshold matching

Abstract We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the fixed-order NLO results to a threshold expansion, we obt...

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Main Authors: Long Chen, Gudrun Heinrich, Stephan Jahn, Stephen P. Jones, Matthias Kerner, Johannes Schlenk, Hiroshi Yokoya
Format: Article
Language:English
Published: SpringerOpen 2020-04-01
Series:Journal of High Energy Physics
Subjects:
NLO Computations
QCD Phenomenology
Online Access:http://link.springer.com/article/10.1007/JHEP04(2020)115
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spelling doaj-4b718bb4d3b64be9bc2f69355df1b8ee2020-11-25T02:59:49ZengSpringerOpenJournal of High Energy Physics1029-84792020-04-012020412310.1007/JHEP04(2020)115Photon pair production in gluon fusion: top quark effects at NLO with threshold matchingLong Chen0Gudrun Heinrich1Stephan Jahn2Stephen P. Jones3Matthias Kerner4Johannes Schlenk5Hiroshi Yokoya6Max Planck Institute for PhysicsMax Planck Institute for PhysicsMax Planck Institute for PhysicsTheoretical Physics Department, CERNPhysik-Institut, Universität ZürichTheory Group LTP, Paul Scherrer InstitutQuantum Universe Center, KIASAbstract We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the fixed-order NLO results to a threshold expansion, we obtain accurate results around the top quark pair production threshold. We analyse how the top quark threshold corrections affect distributions of the photon pair invariant mass and comment on the possibility of determining the top quark mass from precision measurements of the diphoton invariant mass spectrum.http://link.springer.com/article/10.1007/JHEP04(2020)115NLO ComputationsQCD Phenomenology
collection DOAJ
language English
format Article
sources DOAJ
author Long Chen
Gudrun Heinrich
Stephan Jahn
Stephen P. Jones
Matthias Kerner
Johannes Schlenk
Hiroshi Yokoya
spellingShingle Long Chen
Gudrun Heinrich
Stephan Jahn
Stephen P. Jones
Matthias Kerner
Johannes Schlenk
Hiroshi Yokoya
Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
Journal of High Energy Physics
NLO Computations
QCD Phenomenology
author_facet Long Chen
Gudrun Heinrich
Stephan Jahn
Stephen P. Jones
Matthias Kerner
Johannes Schlenk
Hiroshi Yokoya
author_sort Long Chen
title Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
title_short Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
title_full Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
title_fullStr Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
title_full_unstemmed Photon pair production in gluon fusion: top quark effects at NLO with threshold matching
title_sort photon pair production in gluon fusion: top quark effects at nlo with threshold matching
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2020-04-01
description Abstract We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the fixed-order NLO results to a threshold expansion, we obtain accurate results around the top quark pair production threshold. We analyse how the top quark threshold corrections affect distributions of the photon pair invariant mass and comment on the possibility of determining the top quark mass from precision measurements of the diphoton invariant mass spectrum.
topic NLO Computations
QCD Phenomenology
url http://link.springer.com/article/10.1007/JHEP04(2020)115
work_keys_str_mv AT longchen photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT gudrunheinrich photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT stephanjahn photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT stephenpjones photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT matthiaskerner photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT johannesschlenk photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT hiroshiyokoya photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
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