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
- Publication Type
- Original research
- Authors
- Fulltext
- Download
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.
Journal
- Title
- PhysicsLettersB
- Publisher
- ScienceDirect
- Publisher Country
- United States of America
- Publication Type
- Prtinted only
- Volume
- 829
- Year
- --
- Pages
- --