Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at s=7TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
29/01/2013
|
Resumo |
Results are presented from a search for a W' boson using a dataset corresponding to 5.0fb-1 of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at s=7TeV. The W' boson is modeled as a heavy W boson, but different scenarios for the couplings to fermions are considered, involving both left-handed and right-handed chiral projections of the fermions, as well as an arbitrary mixture of the two. The search is performed in the decay channel W'→tb, leading to a final state signature with a single electron or muon, missing transverse energy, and jets, at least one of which is identified as a b-jet. A W' boson that couples to the right-handed (left-handed) chiral projections of the fermions with the same coupling constants as the W is excluded for masses below 1.85 (1.51) TeV at the 95% confidence level. For the first time using LHC data, constraints on the W' gauge couplings for a set of left- and right-handed coupling combinations have been placed. These results represent a significant improvement over previously published limits. © 2012 CERN. |
Formato |
1229-1251 |
Identificador |
http://dx.doi.org/10.1016/j.physletb.2012.12.008 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 718, n. 4-5, p. 1229-1251, 2013. 0370-2693 http://hdl.handle.net/11449/74427 10.1016/j.physletb.2012.12.008 WOS:000314554300011 2-s2.0-84872446070 2-s2.0-84872446070.pdf |
Idioma(s) |
eng |
Relação |
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #CMS #Physics #W' |
Tipo |
info:eu-repo/semantics/article |