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Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s = 13 TeV with the ATLAS detector
dc.contributor.author | Aaboud, M. | |
dc.contributor.author | Rogan, Christopher | |
dc.contributor.author | ATLAS Collaboration | |
dc.date.accessioned | 2021-01-27T20:39:42Z | |
dc.date.available | 2021-01-27T20:39:42Z | |
dc.date.issued | 2019-03-26 | |
dc.identifier.citation | M. Aaboud et al., "Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s = 13 TeV with the ATLAS detector", Phys. Rev. D 99, 052009, 26 March 2019, American Physical Society, https://doi.org/10.1103/PhysRevD.99.052009 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/31281 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.description.abstract | A search for four-top-quark production, tt¯tt¯, is presented. It is based on proton-proton collision data with a center-of-mass energy √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. | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | © 2019 CERN, for the ATLAS Collaboration. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s = 13 TeV with the ATLAS detector | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Rogan, Christopher | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1103/PhysRevD.99.052009 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |