en
Scientific article
Open access
English

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

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 829, 137066
Publication date2022
First online date2022-04-04
Abstract

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 139fb−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.

eng
Keywords
  • P p: colliding beams
  • Dark matter: direct detection
  • Z0: associated production
  • Z0: leptonic decay
  • Higgs particle: associated production
  • Higgs particle: invisible decay
  • Dark matter: associated production
  • P p: scattering
  • Higgs particle: branching ratio
  • Branching ratio: upper limit
  • ATLAS
  • Mediation
  • CERN LHC Coll
  • Higgs particle: doublet
  • Pseudoscalar
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. 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. In: Physics letters. B, 2022, vol. 829, p. 137066. doi: 10.1016/j.physletb.2022.137066
Main files (1)
Article (Published version)
Identifiers
ISSN of the journal0370-2693
13views
2downloads

Technical informations

Creation04/18/2024 7:21:20 AM
First validation05/30/2024 10:49:06 AM
Update time05/30/2024 10:49:06 AM
Status update05/30/2024 10:49:06 AM
Last indexation05/30/2024 10:49:27 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack