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

0367678 - FZÚ 2013 RIV NL eng J - Journal Article
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … Total 426 authors
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. E-ISSN 1873-2445
R&D Projects: GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : resonances * top quark * bottom quark * left-right couplings
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 3.955, year: 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.
Permanent Link: http://hdl.handle.net/11104/0202268