Search for the Higgs Boson Using Neural Networks in Events with Missing Energy and b-Quark Jets in pp̅ Collisions at √s=1.96  TeV

We report on a search for the standard model Higgs boson produced in association with a W or Z boson in pp̅ collisions at √s=1.96  TeV recorded by the CDF II experiment at the Tevatron in a data sample corresponding to an integrated luminosity of 2.1  fb-1. We consider events which have no identifie...

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Detalhes bibliográficos
Autores: Aaltonen, Timo Antero, Álvarez González, Bárbara, Amerio, Silvia, Amidei, Dante, Anastassov, Anton, Annovi, Alberto, Antos, Jaroslav, Apollinari, Giorgio, Apresyan, Artur, Arisawa, Tetsuo, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054, Artikov, A., Adelman, Jahred
Formato: artículo
Fecha de publicación:2010
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/2080
Acesso em linha:http://hdl.handle.net/10902/2080
Access Level:acceso abierto
Descrição
Resumo:We report on a search for the standard model Higgs boson produced in association with a W or Z boson in pp̅ collisions at √s=1.96  TeV recorded by the CDF II experiment at the Tevatron in a data sample corresponding to an integrated luminosity of 2.1  fb-1. We consider events which have no identified charged leptons, an imbalance in transverse momentum, and two or three jets where at least one jet is consistent with originating from the decay of a b hadron. We find good agreement between data and background predictions. We place 95% confidence level upper limits on the production cross section for several Higgs boson masses ranging from 110  GeV/c2 to 150  GeV/c2. For a mass of 115  GeV/c2 the observed (expected) limit is 6.9 (5.6) times the standard model prediction.