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Measuring hadronic Higgs boson branching ratios at future lepton colliders

Knobbe, Max; Krauss, Frank; Reichelt, Daniel; Schumann, Steffen

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Authors

Max Knobbe

Steffen Schumann



Abstract

We present a novel strategy for the simultaneous measurement of Higgs-boson branching ratios into gluons and light quarks at a future lepton collider operating in the Higgs-factory mode. Our method is based on template fits to global event-shape observables, and in particular fractional energy correlations, thereby exploiting differences in the QCD radiation patterns of quarks and gluons. In a constrained fit of the deviations of the light-flavour hadronic Higgs-boson branching ratios from their Standard Model expectations, based on an integrated luminosity of 5ab-1, we obtain 68% confidence level limits of μgg=1±0.05 and μqq¯<21.

Citation

Knobbe, M., Krauss, F., Reichelt, D., & Schumann, S. (2024). Measuring hadronic Higgs boson branching ratios at future lepton colliders. The European Physical Journal C, 84(1), Article 83. https://doi.org/10.1140/epjc/s10052-024-12430-4

Journal Article Type Article
Acceptance Date Jan 10, 2024
Online Publication Date Jan 25, 2024
Publication Date 2024
Deposit Date Mar 21, 2024
Publicly Available Date Mar 21, 2024
Journal The European Physical Journal C
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 84
Issue 1
Article Number 83
DOI https://doi.org/10.1140/epjc/s10052-024-12430-4
Public URL https://durham-repository.worktribe.com/output/2174573

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Licence
http://creativecommons.org/licenses/by/4.0/

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.





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