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dc.contributor.authorChatrchyan, S.
dc.contributor.authorIşıldak, Bora
dc.date.accessioned2014-12-22T08:36:17Z
dc.date.available2014-12-22T08:36:17Z
dc.date.issued2014-05-02
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/10679/764
dc.identifier.urihttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.171802
dc.description.abstractA search for flavor-changing neutral currents in top-quark decays t -> Zq is performed in events produced from the decay chain (tt) over bar -> Zq + Wb, where both vector bosons decay leptonically, producing a final state with three leptons (electrons or muons). A data set collected with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 19.7 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV. No excess is seen in the observed number of events relative to the standard model prediction; thus, no evidence for flavor-changing neutral currents in top-quark decays is found. A combination with a previous search at 7 TeV excludes a t. Zq branching fraction greater than 0.05% at the 95% confidence level.en_US
dc.description.sponsorshipBMWF ; FWF ; FNRS ; FWO ; CNPq ; CAPES ; FAPERJ ; FAPESP ; MES ; CERN ; CAS ; MoST ; NSFC ; COLCIENCIAS ; MSES ; RPF ; MoER ; ERDF ; Academy of Finland ; MEC ; HIP ; CEA ; CNRS ; BMBF ; DFG ; HGF ; GSRT ; OTKA ; NKTH ; DAE ; DST ; IPM ; SFI ; INFN ; NRF ; WCU ; LAS ; CINVESTAV ; CONACYT ; UASLP-FAI ; MSI ; PAEC ; MSHE ; NSC ; FCT ; JINR ; MON ; RosAtom ; RAS ; RFBR ; MESTD ; SEIDI ; CPAN ; Swiss Funding Agencies ; NSC ; ThEPCenter ; IPST ; STAR ; NSTDA ; TUBITAK ; TAEK ; NASU ; STFC ; DOE ; NSF.
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.relationinfo:turkey/grantAgreement/TUBITAKen_US
dc.relation.ispartofPhysical Review Letters
dc.rightsopenAccess
dc.titleSearch for flavor-changing neutral currents in top-quark decays t -> Zq in pp collisions at root s=8 TeVen_US
dc.typeArticleen_US
dc.description.versionpublisher version
dc.peerreviewedyesen_US
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID124605
dc.contributor.ozuauthorIşıldak, Bora
dc.creatorThe CMS Collaboration
dc.identifier.volume112
dc.identifier.issue17
dc.identifier.wosWOS:000336099500003
dc.identifier.doi10.1103/PhysRevLett.112.171802
dc.identifier.scopusSCOPUS:2-s2.0-84899876401
dc.contributor.authorMale1


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