Search for Higgs Boson Pair Production in the WW*WW* Decay Channel Using ATLAS Data Recorded at √s = 13 TeV

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dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAaboud, M.
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbeloos, B.
dc.contributor.authorAbhayasinghe, D. K.
dc.contributor.authorAbidi, S. H.
dc.contributor.authorIzen, Joseph M.
dc.contributor.authorMeirose, Bernhard
dc.contributor.authorReeves, Kendall
dc.contributor.authorATLAS collaboration
dc.contributor.utdAuthorIzen, Joseph M.
dc.contributor.utdAuthorMeirose, Bernhard
dc.contributor.utdAuthorReeves, Kendall
dc.date.accessioned2020-03-04T22:40:50Z
dc.date.available2020-03-04T22:40:50Z
dc.date.issued2019-05-21
dc.description.abstractA search for a pair of neutral, scalar bosons with each decaying into two W bosons is presented using 36.1 fb⁻¹ of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. This search uses three production models: non-resonant and resonant Higgs boson pair production and resonant production of a pair of heavy scalar particles. Three final states, classified by the number of leptons, are analysed: two same-sign leptons, three leptons, and four leptons. No significant excess over the expected Standard Model backgrounds is observed. An observed (expected) 95% confidence-level upper limit of 160 (120) times the Standard Model prediction of non-resonant Higgs boson pair production cross-section is set from a combined analysis of the three final states. Upper limits are set on the production cross-section times branching ratio of a heavy scalar X decaying into a Higgs boson pair in the mass range of 260 GeV ≤ mχ ≤ 500 GeV and the observed (expected) limits range from 9.3 (10) pb to 2.8 (2.6) pb. Upper limits are set on the production cross-section times branching ratio of a heavy scalar Χ decaying into a pair of heavy scalars S for mass ranges of 280 GeV ≤ mχ ≤ 340 GeV and 135 GeV ≤ m_{S} ≤ 165 GeV and the observed (expected) limits range from 2.5 (2.5) pb to 0.16 (0.17) pb. © 2019, The Author(s).
dc.description.departmentSchool of Natural Sciences and Mathematics
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, O. Abdinov, et al. 2019. "Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at √s = 13 TeV." Journal of High Energy Physics 2019(5): art. 124, doi: 10.1007/JHEP05(2019)124
dc.identifier.issn1126-6708
dc.identifier.issue5
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP05(2019)124
dc.identifier.urihttps://hdl.handle.net/10735.1/7341
dc.identifier.volume2019
dc.language.isoen
dc.publisherSpringer Verlag
dc.rightsCC BY 4.0 (Attribution)
dc.rights©2019 CERN for the benefit of the ATLAS Collaboration
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.journalJournal of High Energy Physics
dc.subjectHadrons--Scattering
dc.subjectBranching ratios (Nuclear physics)
dc.subjectScalar field theory
dc.subjectStandard model (Nuclear physics)
dc.subjectLeptons (Nuclear physics)
dc.subjectHiggs bosons
dc.subjectLarge Hadron Collider (France and Switzerland)
dc.subjectProton-proton interactions
dc.subjectW bosons
dc.subjectBosons
dc.titleSearch for Higgs Boson Pair Production in the WW*WW* Decay Channel Using ATLAS Data Recorded at √s = 13 TeV
dc.type.genrearticle

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Izen, Joseph M.