Evidence for tt¯ tt¯ production in the multilepton final state in proton–proton collisions at ?s=13 TeV with the ATLAS detector

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dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorÇelebi, Emre
dc.date.accessioned2021-05-07T08:57:46Z
dc.date.available2021-05-07T08:57:46Z
dc.date.issued2020-11
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractA search is presented for four-top-quark production using an integrated luminosity of 139 fb- 1 of proton–proton collision data at a centre-of-mass energy of 13TeV collected by the ATLAS detector at the LHC. Events are selected if they contain a same-sign lepton pair or at least three leptons (electrons or muons). Jet multiplicity, jet flavour and event kinematics are used to separate signal from the background through a multivariate discriminant, and dedicated control regions are used to constrain the dominant backgrounds. The four-top-quark production cross section is measured to be 24-6+7 fb. This corresponds to an observed (expected) significance with respect to the background-only hypothesis of 4.3 (2.4) standard deviations and provides evidence for this process.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-020-08509-3
dc.identifier.issn1434-6044
dc.identifier.scopus2-s2.0-85096516887en_US
dc.identifier.urihttps://hdl.handle.net/11411/3648
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-020-08509-3
dc.identifier.wosWOS:000595710000001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue11en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors100+en_US
dc.pages11689en_US
dc.publisherSpringer Science and Business Media Deutschland GmbHen_US
dc.relation.ispartofEuropean Physical Journal Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.titleEvidence for tt¯ tt¯ production in the multilepton final state in proton–proton collisions at ?s=13 TeV with the ATLAS detector
dc.typeArticle
dc.volume80en_US

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