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Título

Search for standard model Higgs boson production in association with a W boson at CDF

AutorAaltonen, T.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Vizán, J. CSIC ORCID; CDF Collaboration
Fecha de publicación2012
EditorAmerican Physical Society
CitaciónPhysical Review D 85(5): 052002 (2012)
ResumenWe present a search for the standard model Higgs boson production in association with a W boson in proton-antiproton collisions (pp̅ →W±H→ℓνbb̅ ) at a center of mass energy of 1.96 TeV. The search employs data collected with the CDF II detector which correspond to an integrated luminosity of approximately 2.7  fb-1. We recorded this data with two kinds of triggers. The first kind required high-pT charged leptons and the second required both missing transverse energy and jets. The search selects events consistent with a signature of a single lepton (e±/μ±), missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with a secondary vertex tagging method and a jet probability tagging method. Kinematic information is fed in an artificial neural network to improve discrimination between signal and background. The search finds that both the observed number of events and the neural network output distributions are consistent with the standard model background expectations, and sets 95% confidence level upper limits on the production cross section times branching ratio. The limits are expressed as a ratio to the standard model production rate. The limits range from 3.6 (4.3 expected) to 61.1 (43.2 expected) for Higgs masses from 100 to 150  GeV/c2, respectively.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.85.052002
URIhttp://hdl.handle.net/10261/52074
DOI10.1103/PhysRevD.85.052002
Identificadoresdoi: 10.1103/PhysRevD.85.052002
issn: 1550-7998
e-issn: 1550-2368
Aparece en las colecciones: (IFCA) Artículos




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