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Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at root 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.authorBelotskiy, K.
dc.contributor.authorBelyaev, N. L.
dc.contributor.authorBulekov, O.
dc.contributor.authorKantserov, V. A.
dc.contributor.authorPonomarenko, D.
dc.contributor.authorProklova, N.
dc.contributor.authorRomaniouk, A.
dc.contributor.authorShulga, E.
dc.contributor.authorSmirnov, N.
dc.contributor.authorSmirnov, S. Yu.
dc.contributor.authorSmirnov, Y.
dc.contributor.authorSoldatov, E. Yu.
dc.contributor.authorTimoshenko, S.
dc.contributor.authorVorobev, K.
dc.contributor.authorTikhomirov, V. O.
dc.contributor.authorБелоцкий, Константин Михайлович
dc.contributor.authorБулеков, Олег Владимирович
dc.contributor.authorРоманюк, Анатолий Самсонович
dc.contributor.authorСмирнов, Сергей Юрьевич
dc.contributor.authorСмирнов, Юрий Сергеевич
dc.contributor.authorСолдатов, Евгений Юрьевич
dc.contributor.authorТимошенко, Сергей Леонидович
dc.contributor.authorВоробьёв, Константин Александрович
dc.contributor.authorТихомиров, Владимир Олегович
dc.date.accessioned2024-11-20T10:46:31Z
dc.date.available2024-11-20T10:46:31Z
dc.date.issued2019
dc.description.abstractA search for four-top-quark production, t (t) over bart (t) over bar, is presented. It is based on proton-proton collision data with a center-of-mass energy root s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb(-1). Data are analyzed in both the single-lepton and opposite-sign dilepton channels, characterized by the presence of one or two isolated electrons or muons with high-transverse momentum and multiple jets. A data-driven method is used to estimate the dominant background from top-quark pair production in association with jets. No significant excess above the Standard Model expectation is observed. The result is combined with the previous same-sign dilepton and multilepton searches carried out by the ATLAS Collaboration and an observed (expected) upper limit of 5.3 (2.1) times the four-top-quark Standard Model cross section is obtained at 95% confidence level. Additionally, an upper limit on the anomalous four-top-quark production cross section is set in the context of an effective field theory model.
dc.identifier.citationSearch for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at root s=13 TeV with the ATLAS detector / Aaboud, M [et al.] // Physical Review D. - 2019. - 99. - № 5. - 10.1103/PhysRevD.99.052009
dc.identifier.doi10.1103/PhysRevD.99.052009
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevD.99.052009
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85064385824&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000462909800001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16808
dc.relation.ispartofPhysical Review D
dc.titleSearch for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at root s=13 TeV with the ATLAS detector
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue5
oaire.citation.volume99
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