Measurement of the Production Cross-Section of a Single Top Quark in Association with a Z Boson in Proton-Proton Collisions at 13 TeV with the ATLAS Detector

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dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.authorAaboud, M.en_US
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbidi, S. H.en_US
dc.contributor.authorAbouZeid, O. S.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.date.accessioned2018-11-05T21:05:18Z
dc.date.available2018-11-05T21:05:18Z
dc.date.created2018-03-14en_US
dc.date.issued2018-11-05
dc.description.abstractThe production of a top quark in association with a Z boson is investigated. The proton-proton collision data collected by the ATLAS experiment at the LHC in 2015 and 2016 at a centre-of-mass energy of √s = 13 TeV are used, corresponding to an integrated luminosity of 36.1 fb⁻¹. Events containing three identified leptons (electrons and/or muons) and two jets, one of which is identified as a b-quark jet are selected. The major backgrounds are diboson, tt̅ and Z + jets production. A neural network is used to improve the background rejection and extract the signal. The resulting significance is 4.2σ in the data and the expected significance is 5.4σ. The measured cross-section for tZq production is 600 ± 170(stat.) ± 140(syst.)fb.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, O. Abdinov, et al. 2018. "Measurement of the production cross-section of a single top quark in association with a Z boson in proton-proton collisions at 13 TeV with the ATLAS detector." Physics Letters B 780, doi:10.1016/j.physletb.2018.03.023en_US
dc.identifier.issn0370-2693en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6269
dc.identifier.volume780en_US
dc.language.isoenen_US
dc.publisherElsevier Science B.V.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.physletb.2018.03.023
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2018 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourcePhysics Letters B
dc.subjectQuarksen_US
dc.subjectZ bosonsen_US
dc.subjectProton-proton interactionsen_US
dc.subjectLeptons (Nuclear physics)en_US
dc.subjectJets (Nuclear physics)en_US
dc.subjectNeural networks (Computer science)en_US
dc.titleMeasurement of the Production Cross-Section of a Single Top Quark in Association with a Z Boson in Proton-Proton Collisions at 13 TeV with the ATLAS Detectoren_US
dc.type.genrearticleen_US

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