This Letter reports a search for a narrow resonant state decaying into two W bosons and two b quarks where one W boson decays leptonically and the other decays into a quark-antiquark pair. The search is particularly sensitive to top-antitop resonant production. We use the full data sample of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, corresponding to an integrated luminosity of 9.45 fb(-1). No evidence for resonant production is found, and upper limits on the production cross section times branching ratio for a narrow resonant state are extracted. Within a specific benchmark model, we exclude a Z' boson with mass, M-Z', below 915 GeV/c(2) decaying into a top-antitop pair at the 95% credibility level assuming a Z' boson decay width of Gamma(Z') = 0.012M(Z'). This is the most sensitive search for a narrow q (q) over bar -initiated t (t) over bar resonance in the mass region below 750 GeV/c(2). DOI: 10.1103/PhysRevLett.110.121802
Titolo: | Search for Resonant Top-Antitop Production in the Lepton Plus Jets Decay Mode Using the Full CDF Data Set | |
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Data di pubblicazione: | 2013 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.110.121802 | |
Handle: | http://hdl.handle.net/11384/39038 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |