Search for associated production of a ๐’ boson with an invisibly decaying Higgs boson or dark matter candidates at โˆš๐’” = 13 TeV with the ATLAS detector

ATLAS Collaboration, Paul Newman

Research output: Contribution to journal โ€บ Article โ€บ peer-review

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 protonโˆ’proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb-1ย  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.
Original languageEnglish
Article number137066
Number of pages25
JournalPhysics Letters B
Volume829
Early online date4 Apr 2022
DOIs
Publication statusE-pub ahead of print - 4 Apr 2022

Keywords

  • hep-ex

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