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dc.contributor.authorChatrchyan, S. A.
dc.contributor.authorKhachatryan, Vladimir A.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorDorney, B.
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, H.
dc.contributor.authorYumiceva, Francisco X.
dc.date.accessioned2014-09-09T15:38:29Z
dc.date.available2014-09-09T15:38:29Z
dc.date.issued2014-05-02
dc.identifier.citationChatrchyan, S., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., . . . Smith, W. H. (2014). Search for flavor-changing neutral currents in top-quark decays t →zq in pp collisions at s =8TeV. Physical Review Letters 112(17)en_US
dc.identifier.urihttp://hdl.handle.net/11141/311
dc.description.abstractA search for flavor-changing neutral currents in top-quark decays t→Zq is performed in events produced from the decay chain tt̄→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 19.7fb-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.language.isoen_USen_US
dc.rightsThis published article is available in accordance with the publisher's policy. It may be subject to U.S. Copyright Law.en_US
dc.rights.urihttp://journals.aps.org/authors/transfer-of-copyright-agreementen_US
dc.titleSearch for flavor-changing neutral currents in top-quark decays t →zq in pp collisions at s =8TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevLett.112.171802


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