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dc.contributor.authorAaboud, M.en_US
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbouZeid, O. S.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorKurth, Matthew G.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.date.accessioned2018-09-12T15:57:21Z
dc.date.available2018-09-12T15:57:21Z
dc.date.created2017-03-22en_US
dc.date.issued2018-09-12
dc.identifier.issn1126-6708en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6062
dc.description.abstractMeasurements of top quark spin observables in tt¯ events are presented based on 20.2 fb−1 of s=8 TeV proton-proton collisions recorded with the ATLAS detector at the LHC. The analysis is performed in the dilepton final state, characterised by the presence of two isolated leptons (electrons or muons). There are 15 observables, each sensitive to a different coefficient of the spin density matrix of tt¯ production, which are measured independently. Ten of these observables are measured for the first time. All of them are corrected for detector resolution and acceptance effects back to the parton and stable-particle levels. The measured values of the observables at parton level are compared to Standard Model predictions at next-to-leading order in QCD. The corrected distributions at stable-particle level are presented and the means of the distributions are compared to Monte Carlo predictions. No significant deviation from the Standard Model is observed for any observable.en_US
dc.language.isoenen_US
dc.publisherSpringer Verlagen_US
dc.relation.urihttp://dx.doi.org/10.1007/JHEP03(2017)113
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2017 CERN, for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceJournal of High Energy Physics
dc.subjectHadrons--Scatteringen_US
dc.subjectMonte Carlo methoden_US
dc.subjectQuantum chromodynamicsen_US
dc.subjectStandard model (Nuclear physics)en_US
dc.subjectPartonsen_US
dc.subjectLeptons (Nuclear physics)en_US
dc.subjectProton-proton interactionsen_US
dc.subjectQuarksen_US
dc.titleMeasurements of Top Quark Spin Observables in tt̅ Events Using Dilepton Final States in √s = 8 TeV PP Collisions with the ATLAS Detectoren_US
dc.type.genrearticleen_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, et al. 2017. "Measurements of top quark spin observables in tt̅ events using dilepton final states in √s=8 TeV pp collisions with the ATLAS detector." Journal of High Energy Physics 2017(3), doi:10.1007/JHEP03(2017)113en_US
dc.identifier.volume2017en_US
dc.identifier.issue3en_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorKurth, Matthew G.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.VIAF250674117 (Izen, JM)en_US


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