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Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb⁻¹ of proton-proton data recorded by the ATLAS experiment

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbed Abud, A.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAbusleme Hoffman, A.C.
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAchkar, B.
dc.contributor.authorAdam, L.
dc.contributor.authorAdam Bourdarios, C.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdamek, L.
dc.contributor.authorAddepalli, S.V.
dc.contributor.authorAdelman, J.
dc.contributor.authoret al.
dc.date.issued2022
dc.descriptionPublished: August 8, 2022
dc.description.abstractA direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 fb−1 of pp collision data at a centre-of-mass energy of p s=13TeV recorded by the ATLAS detector at the LHC. The observed numbers of events are found to be in agreement with the background expectation from Standard Model processes. For a scalar Higgs boson with a mass of 125 GeV and a Standard Model production cross section, an observed upper limit of 0.145 is placed on the branching fraction of its decay into invisible particles at 95% confidence level, with an expected limit of 0.103. These results are interpreted in the context of models where the Higgs boson acts as a portal to dark matter, and limits are set on the scattering cross section of weakly interacting massive particles and nucleons. Invisible decays of additional scalar bosons with masses from 50 GeV to 2TeV are also studied, and the derived upper limits on the cross section times branching fraction decrease with increasing mass from 1.0 pb for a scalar boson mass of 50 GeV to 0.1 pb at a mass of 2TeV.
dc.description.statementofresponsibilityThe ATLAS collaboration, G.Aad ... E.K. Filmer ... P.Jackson ... A.X.Y. Kong ... H.Potti ... T.A. Ruggeri ... A.S. Sharma ... E.X.L. Ting ... M.J. White ... et al.
dc.identifier.citationJournal of High Energy Physics (JHEP), 2022; 2022(8):1-66
dc.identifier.doi10.1007/jhep08(2022)104
dc.identifier.issn1029-8479
dc.identifier.issn1029-8479
dc.identifier.orcidFilmer, E.K. [0000-0001-6967-7325]
dc.identifier.orcidJackson, P. [0000-0002-0847-402X]
dc.identifier.orcidKong, A.X.Y. [0000-0001-8063-8765]
dc.identifier.orcidMcDougall, A.E. [0000-0001-7713-2800]
dc.identifier.orcidPotti, H. [0000-0002-0800-9902]
dc.identifier.orcidRuggeri, T.A. [0000-0001-9941-1966]
dc.identifier.orcidTing, E.X.L. [0000-0002-5886-6339]
dc.identifier.orcidWhite, M.J. [0000-0001-5474-4580]
dc.identifier.urihttps://hdl.handle.net/2440/136419
dc.language.isoen
dc.publisherSpringer
dc.rightsOpen Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.
dc.source.urihttps://doi.org/10.1007/jhep08(2022)104
dc.subjectHadron-Hadron Scattering; Higgs Physics; Vector Boson Production
dc.titleSearch for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb⁻¹ of proton-proton data recorded by the ATLAS experiment
dc.title.alternativeSearch for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb-1 of proton-proton data recorded by the ATLAS experiment
dc.typeJournal article
pubs.publication-statusPublished

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