Search for same-charge top-quark pair production in pp collisions at √s = 13 TeV with the ATLAS detector

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dc.contributor.authorAad, G.
dc.contributor.authorAakvaag, E.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbdelhameed, S.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbicht, N.J.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboelela, M.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAckermann, A.
dc.contributor.authorAdam Bourdarios, C.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAddepalli, S.V.
dc.contributor.authorAddison, M.J.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdiguzel, A.
dc.contributor.authoret al.
dc.date.issued2025
dc.descriptionPublished: February 12, 2025
dc.description.abstractA search for the production of top-quark pairs with the same electric charge (tt or ¯t¯t) is presented. The analysis uses proton-proton collision data at √s = 13TeV, recorded by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. Events with two same-charge leptons and at least two b-tagged jets are selected. Neural networks are employed to define two selections sensitive to additional couplings beyond the Standard Model that would enhance the production rate of same-sign top-quark pairs. No significant signal is observed, leading to an upper limit on the total production cross-section of same-sign top-quark pairs of 1.6 fb at 95% confidence level. Corresponding limits on the three Wilson coefficients associated with the O(1)tu, O(1)Qu, and O(8)Qu operators in the Standard Model Effective Field Theory framework are derived.
dc.description.statementofresponsibilityThe ATLAS collaboration
dc.identifier.citationJournal of High Energy Physics (JHEP), 2025; 2025(2):84-0-84-51
dc.identifier.doi10.1007/jhep02(2025)084
dc.identifier.issn1029-8479
dc.identifier.issn1029-8479
dc.identifier.orcidFewell, M.P. [0000-0002-4406-0430]
dc.identifier.orcidJackson, P. [0000-0002-0847-402X]
dc.identifier.orcidPotti, H. [0000-0002-0800-9902]
dc.identifier.orcidTing, E.X.L. [0000-0002-5886-6339]
dc.identifier.orcidWhite, M.J. [0000-0001-5474-4580]
dc.identifier.urihttps://hdl.handle.net/2440/144433
dc.language.isoen
dc.publisherSpringer Nature
dc.relation.grantARC
dc.rightsOpen Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
dc.source.urihttps://doi.org/10.1007/jhep02(2025)084
dc.subjectHadron-Hadron Scattering
dc.titleSearch for same-charge top-quark pair production in pp collisions at √s = 13 TeV with the ATLAS detector
dc.title.alternativeSearch for same-charge top-quark pair production in pp collisions at root s = 13 TeV with the ATLAS detector
dc.typeJournal article
pubs.publication-statusPublished

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