Search for Resonant Top-Antitop Production in the Lepton Plus Jets Decay Mode Using the Full CDF Data Set
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Aaltonen-2013-Search for resonant top-antitop production in the lepton plus.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
March 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaltonen, T., S. Amerio, D. Amidei, et al. 2013 Search for Resonant Top-Antitop Production in the Lepton Plus Jets Decay Mode Using the Full CDF Data Set. Physical Review Letters 110(12). © 2013 American Physical Society.
Version
Final published version
Abstract
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[superscript -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[subscript Z′], below 915 GeV/c[superscript 2] decaying into a top-antitop pair at the 95% credibility level assuming a Z′ boson decay width of Γ[subscript Z′]=0.012M[subscript Z′]. This is the most sensitive search for a narrow qq̅ -initiated tt̅ resonance in the mass region below 750 GeV/c[superscript 2].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.121802
