Search for the Higgs boson produced in association with Z -> l(+)l(-) using the matrix element method at CDF II

We present a search for associated production of the standard model Higgs boson and a Z boson where the Z boson decays to two leptons and the Higgs decays to a pair of b quarks in p (p) over bar collisions at the Fermilab Tevatron. We use event probabilities based on standard model matrix elements t...

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Detalles Bibliográficos
Autores: CDF Collaboration, Cabrera, Susana, Cuenca Almenar, Cristóbal, Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, Gervasio, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar Cortabitarte, R., Aaltonen, T.
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/22292
Acceso en línea:http://hdl.handle.net/10261/22292
Access Level:acceso abierto
Palabra clave:ddc:500.2
Descripción
Sumario:We present a search for associated production of the standard model Higgs boson and a Z boson where the Z boson decays to two leptons and the Higgs decays to a pair of b quarks in p (p) over bar collisions at the Fermilab Tevatron. We use event probabilities based on standard model matrix elements to construct a likelihood function of the Higgs content of the data sample. In a CDF data sample corresponding to an integrated luminosity of 2: 7 fb(-1) we see no evidence of a Higgs boson with a mass between 100 GeV=c(2) and 150 GeV/c(2). We set 95% confidence level upper limits on the cross section for ZH production as a function of the Higgs boson mass m(H); the limit is 8.2 times the standard model prediction at m(H) 115 GeV/c(2).

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