Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb ?1 of pp collision data at ?s = 13 TeV

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dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2022-10-31T08:31:30Z
dc.date.available2022-10-31T08:31:30Z
dc.date.issued2022-03
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractAbstract: Searches are conducted for new spin-0 or spin-1 bosons using events where a Higgs boson with mass 125 GeV decays into four leptons (? = e, ?). This decay is presumed to occur via an intermediate state which contains two on-shell, promptly decaying bosons: H ? XX/ZX ? 4?, where the new boson X has a mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 139 fb?1 at a centre-of-mass energy s = 13 TeV. The data are found to be consistent with Standard Model expectations. Limits are set on fiducial cross sections and on the branching ratio of the Higgs boson to decay into XX/ZX, improving those from previous publications by a factor between two and four. Limits are also set on mixing parameters relevant in extensions of the Standard Model containing a dark sector where X is interpreted to be a dark boson. [Figure not available: see fulltext.] © 2022, The Author(s).en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1007/JHEP03(2022)041en_US
dc.identifier.issn1029-8479
dc.identifier.scopus2-s2.0-85133171187en_US
dc.identifier.urihttps://hdl.handle.net/11411/4627
dc.identifier.urihttps://doi.org/10.1007/JHEP03(2022)041
dc.identifier.wosWOS:000767928300001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue3en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors100+en_US
dc.publisherSpringer Science and Business Media Deutschland GmbHen_US
dc.relation.ispartofJournal of High Energy Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBeyond Standard Modelen_US
dc.subjectHadron-Hadron Scatteringen_US
dc.subjectHiggs Physicsen_US
dc.titleSearch for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb ?1 of pp collision data at ?s = 13 TeVen_US
dc.typeArticleen_US
dc.volume2002en_US

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