Search for the Production of Narrow tb-bar Resonances in 1.9 fb-1 of pp-bar Collisions at sqrt[s]=1.96 TeV
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Aaltonen-2009-Search for the Produ.pdf
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Author(s)
Xie, Si
Knuteson, Bruce O.
Henderson, C.
Hahn, Kristian Allan
Gomez-Ceballos, Guillelmo
Choudalakis, Georgios
Paus, Christoph M. E.
Makhoul, Khaldoun
Goncharov, Maxim
Bauer, Gerry P
Alternative Title
Search for the Production of Narrow tb̅ Resonances in 1.9 fb^(-1) of pp̅ Collisions at √s=1.96 TeV
Date Issued
July 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Search for the Production of Narrow tb-bar Resonances in 1.9 fb-1 of pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 103.4 (2009): 041801. © 2009 The American Physical Society
Version
Final published version
Abstract
We present new limits on resonant tb̅ production in pp̅ collisions at √s=1.96 TeV, using 1.9 fb[superscript -1] of data recorded with the CDF II detector at the Fermilab Tevatron. We reconstruct a candidate tb̅ mass in events with a lepton, neutrino candidate, and two or three jets, and search for anomalous tb̅ production as modeled by W′→tb̅ . We set a new limit on a right-handed W′ with standard model-like coupling, excluding any mass below 800 GeV/c[superscript 2] at 95% C.L. The cross section for any narrow, resonant tb̅ production between 750 and 950 GeV/c[superscript 2] is found to be less than 0.28 pb at 95% C.L. We also present an exclusion of the W′ coupling strength versus W′ mass over the range 300–950 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
http://dx.doi.org/10.1103/PhysRevLett.103.041801
