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Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at √s = 13 TeV with the ATLAS detector

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dc.contributor.authorAaboud, M.
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbeloos, B.
dc.contributor.authorAbidi, S.
dc.contributor.authorAbouZeid, O.
dc.contributor.authorAbraham, N.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbreu, R.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.
dc.contributor.authorAdachi, S.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdersberger, M.
dc.contributor.authorAdye, T.
dc.contributor.authorAffolder, A.
dc.contributor.authorAfik, Y.
dc.contributor.authoret al.
dc.date.issued2018
dc.description.abstractA search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a leptonically decaying Z boson in proton–proton collisions at √s = 13TeVis presented. This search uses 36.1fb⁻¹ of data collected by the ATLAS experiment at the Large Hadron Collider. No significant deviation from the expectation of the Standard Model backgrounds is observed. Assuming the Standard Model ZH production cross-section, an observed (expected) upper limit of 67% (39%) at the 95% confidence level is set on the branching ratio of invisible decays of the Higgs boson with mass m(H) = 125GeV. The corresponding limits on the production cross-section of the ZH process with the invisible Higgs boson decays are also presented. Furthermore, exclusion limits on the dark matter candidate and mediator masses are reported in the framework of simplified dark matter models.
dc.description.statementofresponsibilityM. Aaboud … D. Duvnjak … P. Jackson … A. Petridis … H. Potti … K. Sato … M.J. White … et al. [The ATLAS Collaboration]
dc.identifier.citationPhysics Letters B, 2018; 776:318-337
dc.identifier.doi10.1016/j.physletb.2017.11.049
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.urihttps://hdl.handle.net/2440/132819
dc.language.isoen
dc.publisherElsevier
dc.relation.grantARC
dc.rights© 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP³.
dc.source.urihttps://doi.org/10.1016/j.physletb.2017.11.049
dc.titleSearch for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at √s = 13 TeV with the ATLAS detector
dc.title.alternativeSearch for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at root s = 13 TeV with the ATLAS detector
dc.typeJournal article
pubs.publication-statusPublished

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