Počet záznamů: 1

Search for W´->tb resonances with left- and right-handed couplings to fermions

  1. 1.
    0367678 - 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 W´->tb resonances with left- and right-handed couplings to fermions.
    Physics Letters. B. Roč. 699, č. 3 (2011), s. 145-150 ISSN 0370-2693
    Grant CEP: GA MŠk LA08047
    Výzkumný záměr: CEZ:AV0Z10100502
    Klíčová slova: resonances * top quark * bottom quark * left-right couplings
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 3.955, rok: 2011
    http://www.sciencedirect.com/science/article/pii/S0370269311003510

    We present a search for the production of a heavy gauge boson, W′, that decays to third-generation quarks, by D0 Collaboration in View the MathML source collisions at View the MathML source. We set 95% confidence level upper limits on the production cross section times branching fraction. For the first time, we set limits for arbitrary combinations of left- and right-handed couplings of the W′ boson to fermions. For couplings with the same strength as for the standard model W boson, we set the following limits, assuming that there are right-handed neutrinos νR for all three generations with M(W′)>m(νR): M(W′)>863 GeV for purely left-handed couplings, M(W′)>885 GeV for purely right-handed couplings, and M(W′)>916 GeV if both left- and right-handed couplings are present. The limit for right-handed couplings improves for M(W′)890 GeV.
    Trvalý link: http://hdl.handle.net/11104/0202268