Search for Technicolor Particles Produced in Association with a W Boson at CDF
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Aaltonen-2010-Search for Technicolor Particles Produced in Association with a W Boson at CDF.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Henderson, C.
Paus, Christoph M. E.
Bauer, Gerry P
Makhoul, Khaldoun
Date Issued
March 2010
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Search for Technicolor Particles Produced in Association with a W Boson at CDF.” Physical Review Letters 104.11 (2010): 111802. © 2010 The American Physical Society
Version
Final published version
Abstract
We present a search for the technicolor particles ρ[subscript T] and π[subscript T] in the process pp̅ →ρ[subscript T]→Wπ[subscript T] at a center of mass energy of √s=1.96 TeV. The search uses a data sample corresponding to approximately 1.9 fb[superscript -1] of integrated luminosity accumulated by the CDF II detector at the Fermilab Tevatron. The event signature we consider is W→ℓν and π[subscript T]→bb̅ , bc̅ or bu̅ depending on the π[subscript T] charge. We select events with a single high-p[subscript T] electron or muon, large missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with multiple b-tagging algorithms. The observed number of events and the invariant mass distributions are consistent with the standard model background expectations, and we exclude a region at 95% confidence level in the ρ[subscript T]-π[subscript T] mass plane. As a result, a large fraction of the region m(ρ[subscript T])=180–250 GeV/c[superscript 2] and m(π[subscript T])=95–145 GeV/c[superscript 2] is excluded.
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.104.111802
