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

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 accur...

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Detalles Bibliográficos
Autores principales: Chen, Long, Heinrich, Gudrun, Jahn, Stephan, Jones, Stephen P., Kerner, Matthias, Schlenk, Johannes, Yokoya, Hiroshi
Lenguaje:eng
Publicado: 2019
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP04(2020)115
http://cds.cern.ch/record/2702446
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author Chen, Long
Heinrich, Gudrun
Jahn, Stephan
Jones, Stephen P.
Kerner, Matthias
Schlenk, Johannes
Yokoya, Hiroshi
author_facet Chen, Long
Heinrich, Gudrun
Jahn, Stephan
Jones, Stephen P.
Kerner, Matthias
Schlenk, Johannes
Yokoya, Hiroshi
author_sort Chen, Long
collection CERN
description 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.
id cern-2702446
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling cern-27024462022-08-20T06:02:27Zdoi:10.1007/JHEP04(2020)115http://cds.cern.ch/record/2702446engChen, LongHeinrich, GudrunJahn, StephanJones, Stephen P.Kerner, MatthiasSchlenk, JohannesYokoya, HiroshiPhoton pair production in gluon fusion: Top quark effects at NLO with threshold matchinghep-phParticle Physics - PhenomenologyWe 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.arXiv:1911.09314CERN-TH-2019-195MPP-2019-236PSI-PR-19-24ZU-TH 48/19oai:cds.cern.ch:27024462019-11-21
spellingShingle hep-ph
Particle Physics - Phenomenology
Chen, Long
Heinrich, Gudrun
Jahn, Stephan
Jones, Stephen P.
Kerner, Matthias
Schlenk, Johannes
Yokoya, Hiroshi
Photon pair production in gluon fusion: Top quark effects at NLO with threshold matching
title 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_short 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
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP04(2020)115
http://cds.cern.ch/record/2702446
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AT jahnstephan photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT jonesstephenp photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT kernermatthias photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT schlenkjohannes photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching
AT yokoyahiroshi photonpairproductioningluonfusiontopquarkeffectsatnlowiththresholdmatching

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