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dc.contributor.authorATLUS Collaboration
dc.date.accessioned2021-06-04T02:34:16Z
dc.date.available2021-06-04T02:34:16Z
dc.date.issued2020
dc.identifier.citationAad, G., Abbott, B., Abbott, D.C. et al. Evidence for tt¯tt¯ production in the multilepton final state in proton–proton collisions at s√=13 TeV with the ATLAS detector. Eur. Phys. J. C 80, 1085 (2020).
dc.identifier.issn1434-6044
dc.identifier.doi10.1140/epjc/s10052-020-08509-3
dc.identifier.urihttp://hdl.handle.net/10150/659625
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. © 2020, CERN for the benefit of the ATLAS collaboration.
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.rightsCopyright © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
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.typetext
dc.contributor.departmentDepartment of Physics, University of Arizona
dc.identifier.journalEuropean Physical Journal C
dc.description.noteOpen access journal
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleEuropean Physical Journal C
refterms.dateFOA2021-06-04T02:34:16Z


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Copyright © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License.