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dc.contributor.authorCMS Collaboration
dc.contributor.authorKarapınar, Güler
dc.date.accessioned2017-09-05T13:12:08Z
dc.date.available2017-09-05T13:12:08Z
dc.date.issued2016-03
dc.identifier.citationKhachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T.,...CMS Collaboration (2016). Measurements of t t ¯ spin correlations and top quark polarization using dilepton final states in pp collisions at √s =8 TeV. Physical Review D, 93(5). doi:10.1103/PhysRevD.93.052007en_US
dc.identifier.issn2470-0010
dc.identifier.urihttp://doi.org/10.1103/PhysRevD.93.052007
dc.identifier.urihttp://hdl.handle.net/11147/6197
dc.description.abstractMeasurements of the top quark-antiquark (tt¯) spin correlations and the top quark polarization are presented for tt¯ pairs produced in pp collisions at s=8 TeV. The data correspond to an integrated luminosity of 19.5 fb-1 collected with the CMS detector at the LHC. The measurements are performed using events with two oppositely charged leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as originating from a bottom quark. The spin correlations and polarization are measured from the angular distributions of the two selected leptons, both inclusively and differentially, with respect to the invariant mass, rapidity, and transverse momentum of the tt¯ system. The measurements are unfolded to the parton level and found to be in agreement with predictions of the standard model. A search for new physics in the form of anomalous top quark chromo moments is performed. No evidence of new physics is observed, and exclusion limits on the real part of the chromo-magnetic dipole moment and the imaginary part of the chromo-electric dipole moment are evaluated. © 2016 CERN.en_US
dc.description.sponsorshipThe Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authorityen_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionof10.1103/PhysRevD.93.052007en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectLarge Hadron Collider (LHC)en_US
dc.subjectCompact Muon Solenoiden_US
dc.titleMeasurements of t t ¯ spin correlations and top quark polarization using dilepton final states in pp collisions at √s =8 TeVen_US
dc.typearticleen_US
dc.contributor.iztechauthorKarapınar, Güler
dc.relation.journalPhysical Review Den_US
dc.contributor.departmentİYTE, Fen Fakültesi, Matematik Bölümüen_US
dc.identifier.volume93en_US
dc.identifier.issue5en_US
dc.identifier.wosWOS:000371742000002
dc.identifier.scopusSCOPUS:2-s2.0-84962244796
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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