# Search for flavor changing neutral currents in decays of top quarks

Abstract : We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for ttbar -> l'null + jets (l, l' = e, mu) final states using 4.1 fb^-1 of integrated luminosity of ppbar collisions at sqrt(s) = 1.96 TeV. We extract limits on the branching ratio B(t -> Zq) (q = u, c quarks), assuming anomalous tuZ or tcZ couplings. We do not observe any sign of such anomalous coupling and set a limit of B < 3.2% at 95% C.L.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00579721
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, March 24, 2011 - 4:28:08 PM
Last modification on : Wednesday, September 16, 2020 - 4:25:15 PM

### Citation

V.M. Abazov, B. Abbott, B.S. Acharya, M. Adams, T. Adams, et al.. Search for flavor changing neutral currents in decays of top quarks. Physics Letters B, Elsevier, 2011, 701, pp.313-320. ⟨10.1016/j.physletb.2011.06.014⟩. ⟨in2p3-00579721⟩

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