Precise predictions for event shapes in hadronic Higgs decays
Year: 2025
Type: article
Abstract: We present NNLO QCD predictions for a wide range of event-shape observables in hadronic Higgs decays, taking into account the two dominant decay modes H → gg and H→bb¯. Specifically, we consider the six classical event shapes thrust, heavy jet mass, C-parameter, total and wide jet broadening, and the three-jet resolution y23 in the Durham algorithm. We also present results for the soft-drop variant of thrust. Decays of the Higgs boson to two gluons are treated in the heavy-top limit, whereas decays to a bottom-quark pair are mediated by a non-vanishing Yukawa coupling, despite considering kinematically massless quarks. Our results highlight the importance of NNLO QCD corrections in the calculation of event-shape observables in hadronic Higgs decays.
Authors: Fox, Elliot, Ridder, Aude Gehrmann-De, Gehrmann, Thomas, Glover, Nigel, Marcoli, Matteo, Preuss, Christian T.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7114892386
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