NNLO+NNLL predictions for heavy-jet mass and C-parameter in Higgs decays to quarks and gluons
We consider the resummation of large logarithmic corrections arising in the two-particle limit at next-to-next-to-leading logarithmic (NNLL) accuracy for the heavy-jet mass and C -parameter distributions in the decay of a Higgs boson to quarks and gluons: H → b b ¯ , H → c c ¯ , and H → gg . We demonstrate how the matched NNLO+NNLL results clarify the relative contributions of key hadronic Higgs-decay channels ( H → b b ¯ , H → c c ¯ , H → gg ) yielding reduced uncertainties for both event-shape observables – especially for heavy-jet mass – while revealing substantial effects that shift the C -parameter peak in gluonic decays.
Authors
- Christian T. Preuss (ORCID: https://orcid.org/0000-0003-1254-0250)
- Matteo Marcoli (ORCID: https://orcid.org/0000-0002-9405-1399)
- Nigel Glover
- Elliot Fox
- Thomas Gehrmann
- Aude Gehrmann-De Ridder
Institutions
- Durham University (GB)
- University of Zurich (CH)
- Instituto de Física Teórica (ES)
- European Organization for Nuclear Research (CH)
- University of Göttingen (DE)
Publication Details
- Journal
- Physics Letters B
- Published
- 2026-03-04
- DOI
- https://doi.org/10.1016/j.physletb.2026.140328
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
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