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Search for Technicolor Particles Produced in Association with a W Boson at CDF

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical review letters. 2010, vol. 104, no. 11, 111802
Abstract We present a search for the technicolor particles ρT and πT in the process pp→ρT→WπT at a center of mass energy of s√=1.96  TeV. The search uses a data sample corresponding to approximately 1.9  fb−1 of integrated luminosity accumulated by the CDF II detector at the Fermilab Tevatron. The event signature we consider is W→ℓν and πT→bb, bc or bu depending on the πT charge. We select events with a single high-pT 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 ρT-πT mass plane. As a result, a large fraction of the region m(ρT)=180–250  GeV/c2 and m(πT)=95–145  GeV/c2 is excluded.
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CDF COLLABORATION. Search for Technicolor Particles Produced in Association with a W Boson at CDF. In: Physical Review Letters, 2010, vol. 104, n° 11, p. 111802. doi: 10.1103/PhysRevLett.104.111802 https://archive-ouverte.unige.ch/unige:38644

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Deposited on : 2014-07-14

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