Search for Resonant Top-antitop Production in the Semi-leptonic Decay Mode Using the Full CDF Data Set
(2013) Physical Review Letters — Vol. 110, n° 12, p. 121802 [8 pages] (2013)
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- Abstract
- This Letter reports a search for a narrow resonant state decaying into two W bosons and a bottom-antibottom quark pair 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 below 915 GeV/c2 decaying into a top-antitop pair at the 95% credibility level assuming a Z′ boson decay width of ΓZ′=0.012MZ′. This is the most sensitive search for a narrow $ensuremath{qar{q}}$-initiated $ensuremath{tar{t}}$ resonance in the mass region below 750 GeV/c2.
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Aaltonen, T., Vizan Garcia, J. M., The CDF Collaboration, & et al. (2013). Search for Resonant Top-antitop Production in the Semi-leptonic Decay Mode Using the Full CDF Data Set. Physical Review Letters, 110(12), 121802 [8 pages]. https://doi.org/10.1103/PhysRevLett.110.121802 (Original work published 2013)