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Four-lepton production in gluon fusion at NLO matched to parton showers

We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $gg \rightarrow ZZ$ and $gg \rightarrow W^+W^-$, matched to the PYTHIA 8  parton shower in the POWHEG approach. The calculation consistently incorporates the continuu...

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Detalles Bibliográficos
Autores principales: Alioli, Simone, Ferrario Ravasio, Silvia, Lindert, Jonas M., Röntsch, Raoul
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-021-09470-5
http://cds.cern.ch/record/2752617
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author Alioli, Simone
Ferrario Ravasio, Silvia
Lindert, Jonas M.
Röntsch, Raoul
author_facet Alioli, Simone
Ferrario Ravasio, Silvia
Lindert, Jonas M.
Röntsch, Raoul
author_sort Alioli, Simone
collection CERN
description We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $gg \rightarrow ZZ$ and $gg \rightarrow W^+W^-$, matched to the PYTHIA 8  parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $gg\rightarrow H^* \rightarrow VV$ process, and their interference. We consider leptonic decay modes of the vector bosons and retain offshell and non-resonant contributions. The processes considered are loop-induced at leading order and thus contain two-loop virtual contributions as well as loop-squared real contributions. Parton-shower effects are found to be marginal in inclusive observables and quite sizeable in observables that are exclusive in additional jet radiation. The Monte Carlo generator presented here allows for realistic experimental effects to be incorporated in state-of-the-art precision analyses of diboson production and of the Higgs boson in the offshell regime.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
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spelling cern-27526172023-01-31T09:41:12Zdoi:10.1140/epjc/s10052-021-09470-5http://cds.cern.ch/record/2752617engAlioli, SimoneFerrario Ravasio, SilviaLindert, Jonas M.Röntsch, RaoulFour-lepton production in gluon fusion at NLO matched to parton showershep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyWe present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $gg \rightarrow ZZ$ and $gg \rightarrow W^+W^-$, matched to the PYTHIA 8  parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $gg\rightarrow H^* \rightarrow VV$ process, and their interference. We consider leptonic decay modes of the vector bosons and retain offshell and non-resonant contributions. The processes considered are loop-induced at leading order and thus contain two-loop virtual contributions as well as loop-squared real contributions. Parton-shower effects are found to be marginal in inclusive observables and quite sizeable in observables that are exclusive in additional jet radiation. The Monte Carlo generator presented here allows for realistic experimental effects to be incorporated in state-of-the-art precision analyses of diboson production and of the Higgs boson in the offshell regime.We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $gg \to ZZ$ and $gg \to W^+W^-$, matched to the PYTHIA8 parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $gg\to H^* \to VV$ process, and their interference. We consider leptonic decay modes of the massive vector bosons and retain offshell and non-resonant contributions. The processes considered are loop-induced at leading order and thus contain two-loop virtual contributions as well as loop-squared real contributions. Parton-shower effects are found to be marginal in inclusive observables and quite sizeable in observables that are exclusive in additional jet radiation. The Monte Carlo generator presented here allows for realistic experimental effects to be incorporated in state-of-the-art precision analyses of diboson production and of the Higgs boson in the offshell regime.arXiv:2102.07783IPPP/20/79CERN-TH-2021-022oai:cds.cern.ch:27526172021-02-15
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Alioli, Simone
Ferrario Ravasio, Silvia
Lindert, Jonas M.
Röntsch, Raoul
Four-lepton production in gluon fusion at NLO matched to parton showers
title Four-lepton production in gluon fusion at NLO matched to parton showers
title_full Four-lepton production in gluon fusion at NLO matched to parton showers
title_fullStr Four-lepton production in gluon fusion at NLO matched to parton showers
title_full_unstemmed Four-lepton production in gluon fusion at NLO matched to parton showers
title_short Four-lepton production in gluon fusion at NLO matched to parton showers
title_sort four-lepton production in gluon fusion at nlo matched to parton showers
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1140/epjc/s10052-021-09470-5
http://cds.cern.ch/record/2752617
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AT ferrarioravasiosilvia fourleptonproductioningluonfusionatnlomatchedtopartonshowers
AT lindertjonasm fourleptonproductioningluonfusionatnlomatchedtopartonshowers
AT rontschraoul fourleptonproductioningluonfusionatnlomatchedtopartonshowers