Four-lepton production in gluon fusion at NLO matched to parton showers
Abstract We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $$gg \rightarrow ZZ$$ g g → Z Z and $$gg \rightarrow W^+W^-$$ g g → W + W - , matched to the PYTHIA 8 parton shower in the POWHEG approach. The calculation...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-08-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09470-5 |
| _version_ | 1819027297335771136 |
|---|---|
| author | Simone Alioli Silvia Ferrario Ravasio Jonas M. Lindert Raoul Röntsch |
| author_facet | Simone Alioli Silvia Ferrario Ravasio Jonas M. Lindert Raoul Röntsch |
| author_sort | Simone Alioli |
| collection | DOAJ |
| description | Abstract We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $$gg \rightarrow ZZ$$ g g → Z Z and $$gg \rightarrow W^+W^-$$ g g → W + W - , matched to the PYTHIA 8 parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $$gg\rightarrow H^* \rightarrow VV$$ g g → H ∗ → V V 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. |
| first_indexed | 2024-12-21T05:40:14Z |
| format | Article |
| id | doaj.art-f088e10064fb47bc8c057c446bb3dbc9 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-21T05:40:14Z |
| publishDate | 2021-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-f088e10064fb47bc8c057c446bb3dbc92022-12-21T19:14:18ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-08-0181811610.1140/epjc/s10052-021-09470-5Four-lepton production in gluon fusion at NLO matched to parton showersSimone Alioli0Silvia Ferrario Ravasio1Jonas M. Lindert2Raoul Röntsch3Università degli Studi di Milano-Bicocca, INFNRudolf Peierls Centre for Theoretical Physics, University of OxfordDepartment of Physics and Astronomy, University of SussexTheoretical Physics Department, CERNAbstract We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $$gg \rightarrow ZZ$$ g g → Z Z and $$gg \rightarrow W^+W^-$$ g g → W + W - , matched to the PYTHIA 8 parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $$gg\rightarrow H^* \rightarrow VV$$ g g → H ∗ → V V 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.https://doi.org/10.1140/epjc/s10052-021-09470-5 |
| spellingShingle | Simone Alioli Silvia Ferrario Ravasio Jonas M. Lindert Raoul Röntsch Four-lepton production in gluon fusion at NLO matched to parton showers European Physical Journal C: Particles and Fields |
| 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 |
| url | https://doi.org/10.1140/epjc/s10052-021-09470-5 |
| work_keys_str_mv | AT simonealioli fourleptonproductioningluonfusionatnlomatchedtopartonshowers AT silviaferrarioravasio fourleptonproductioningluonfusionatnlomatchedtopartonshowers AT jonasmlindert fourleptonproductioningluonfusionatnlomatchedtopartonshowers AT raoulrontsch fourleptonproductioningluonfusionatnlomatchedtopartonshowers |