Precise predictions for event shapes in hadronic Higgs decays
A bstract 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 $$ H\to b\overline{b} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>H</mml:mi> <mml:mo>→</mml:mo> <mml:mi>b</mml:mi> <mml:mover> <mml:mi>b</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> . Specifically, we consider the six classical event shapes thrust, heavy jet mass, C -parameter, total and wide jet broadening, and the three-jet resolution y 23 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
- Aude Gehrmann-De Ridder (ORCID: https://orcid.org/0000-0002-2686-9658)
- E. W. N. Glover (ORCID: https://orcid.org/0000-0002-0173-4175)
- T. Gehrmann (ORCID: https://orcid.org/0000-0001-7009-432X)
- Christian T. Preuss (ORCID: https://orcid.org/0000-0003-1254-0250)
- Matteo Marcoli (ORCID: https://orcid.org/0000-0002-9405-1399)
- Elliot Fox (ORCID: https://orcid.org/0009-0005-3489-7543)
Institutions
- Durham University (GB)
- University of Zurich (CH)
- Instituto de Física Teórica (ES)
- University of Göttingen (DE)
Publication Details
- Journal
- Journal of High Energy Physics
- Published
- 2025-11-26
- DOI
- https://doi.org/10.1007/jhep11(2025)168
- Citations
- 3
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 5.61
Funders
- National Science Foundation
- Bergische Universität Wuppertal
- European Commission
- Deutsche Forschungsgemeinschaft
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Bundesministerium für Bildung und Forschung
- Centro Svizzero di Calcolo Scientifico
- National Supercomputing Centre Singapore
- Science and Technology Facilities Council