Search for the Standard Model Higgs boson produced in association with a vector boson and decaying to a b-quark pair with the ATLAS detector

This Letter presents the results of a direct search with the ATLAS detector at the LHC for a Standard Model Higgs boson of mass 110 <= m(H) <= 130 GeV produced in association with a W or Z boson and decaying to b (b) over bar. Three decay channels are considered: ZH -> l(+)l(-)b (b) over ba...

ver descrição completa

Detalhes bibliográficos
Autor principal: Castro, Nuno Filipe (author)
Outros Autores: Onofre, A. (author), ATLAS Collaboration (author)
Formato: article
Idioma:eng
Publicado em: 2012
Assuntos:
Standard Model Higgs boson
ATLAS
LHC
Ciências Naturais::Ciências Físicas
Science & Technology
Texto completo:http://hdl.handle.net/1822/57558
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/57558
Descrição
Resumo:This Letter presents the results of a direct search with the ATLAS detector at the LHC for a Standard Model Higgs boson of mass 110 <= m(H) <= 130 GeV produced in association with a W or Z boson and decaying to b (b) over bar. Three decay channels are considered: ZH -> l(+)l(-)b (b) over bar, WH -> lvbb (b) over bar and ZH -> v (v) over bar(b) over bar where l corresponds to an electron or a muon. No evidence for Higgs boson production is observed in a dataset of 7 TeV pp collisions corresponding to 4.7 fb(-1) of integrated luminosity collected by ATLAS in 2011. Exclusion limits on Higgs boson production, at the 95% confidence level, of 2.5 to 5.5 times the Standard Model cross section are obtained in the mass range 110-130 GeV. The expected exclusion limits range between 2.5 and 4.9 for the same mass interval.

Registros relacionados