Počet záznamů: 1

Search for flavor changing neutral currents in decays of top quarks

  1. 1.
    0367666 - FZU-D 2013 RIV NL eng J - Článek v odborném periodiku
    Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš
    Search for flavor changing neutral currents in decays of top quarks.
    Physics Letters. B. Roč. 701, č. 3 (2011), 313-320 ISSN 0370-2693
    Výzkumný záměr: CEZ:AV0Z10100502
    Klíčová slova: Tevatron * D0 * top quark * flavor changing neutral current
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 3.955, rok: 2011

    We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for t (t) over bar -> l´vl (l) over bar + jets (l, l´= e. mu) final states using 4.1 fb(-1) of integrated luminosity of p (p) over bar collisions at root 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.
    Trvalý link: http://hdl.handle.net/11104/0202259