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Título

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

AutorAaltonen, T.; Cabrera, Susana ; Cuenca Almenar, Cristóbal ; Álvarez González, B.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío
Fecha de publicación19-mar-2010
EditorAmerican Physical Society
CitaciónPhysical Review Letters 104(11): 111802 (2010)
ResumenWe present a search for the technicolor particles ρT and πT in the process pp̅ →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→bb̅ , bc̅ or bu̅ 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.
Descripción7 páginas, 3 figuras, 1 tabla.-- PACS numbers: 14.80.Tt, 12.60.Nz, 13.85.Rm.-- CDF Collaboration: et al.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevLett.104.111802
URIhttp://hdl.handle.net/10261/23263
DOI10.1103/PhysRevLett.104.111802
ISSN0031-9007
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