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Search for associated production of a $Z$ boson with an invisibly decaying Higgs boson or dark matter candidates at $\sqrt s$ =13 TeV with the ATLAS detector

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  • Additional Information
    • Publication Information:
      North-Holland Publ.
    • Publication Date:
      2022
    • Collection:
      DESY Publication Database (PUBDB)
    • Subject Terms:
      DE
    • 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.
    • Relation:
      info:eu-repo/semantics/altIdentifier/arxiv/arXiv:2111.08372; info:eu-repo/semantics/altIdentifier/issn/1873-2445; info:eu-repo/semantics/altIdentifier/issn/0370-2693; https://bib-pubdb1.desy.de/record/481343; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2022-04316%22
    • Online Access:
      https://doi.org/10.1016/j.physletb.2022.137066
      https://doi.org/10.3204/PUBDB-2022-04316
      https://bib-pubdb1.desy.de/record/481343
      https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2022-04316%22
    • Rights:
      info:eu-repo/semantics/openAccess
    • Accession Number:
      edsbas.DD8677AA