Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at s=13 TeV with the ATLAS detector
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Fecha
2022-06-10
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Elsevier B.V.
Nombre de Curso
Licencia CC
CC BY 4.0 DEED
Attribution 4.0 International
Licencia CC
https://creativecommons.org/licenses/by/4.0/
Resumen
A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Z boson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb−1 and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for ZH production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator. © 2022 The Author(s)
Notas
Indexación: Scopus.
Palabras clave
Boson, Partons, Higgs Bosons
Citación
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Volume 829, 10 June 2022, Article number 137066
DOI
10.1016/j.physletb.2022.137066