We report on a search for charged massive resonances decaying to top (t) and bottom (b) quarks in the full data set of proton-antiproton collisions at a center-of-mass energy of s=1.96TeV collected by the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.5fb-1. No significant excess above the standard model background prediction is observed. We set 95% Bayesian credibility mass-dependent upper limits on the heavy charged-particle production cross section times branching ratio to tb. Using a standard model extension with a W′→tb and left-right-symmetric couplings as a benchmark model, we constrain the W′ mass and couplings in the 300-900GeV/c2 range. The limits presented here are the most stringent for a charged resonance with mass in the range 300-600GeV/c2 decaying to top and bottom quarks.
|Titolo:||Search for resonances decaying to top and bottom quarks with the CDF experiment|
|Data di pubblicazione:||2015|
|Tipologia:||1.1 Articolo in rivista|