Publicação
Search for a Standard Model Higgs boson in the mass range 200-600 GeV in the H -> ZZ -> l(+)l(-)q(q)over-bar decay channel with the ATLAS detector
| Resumo: | A search for a heavy Standard Model Higgs boson decaying via View the MathML sourceH→ZZ→ℓ+ℓ−qq¯, where ℓ=eℓ=e or μ, is presented. The search uses a data set of pp collisions at View the MathML sources=7 TeV, corresponding to an integrated luminosity of 4.7 fb−14.7 fb−1 collected in 2011 by the ATLAS detector at the CERN LHC. No significant excess of events above the estimated background is found. Upper limits at 95% confidence level on the production cross section of a Higgs boson with a mass in the range between 200 and 600 GeV600 GeV are derived. A Standard Model Higgs boson with a mass in the range 300 GeV⩽mH⩽322 GeV300 GeV⩽mH⩽322 GeV or 353 GeV⩽mH⩽410 GeV353 GeV⩽mH⩽410 GeV is excluded at 95% CL. The corresponding expected exclusion range is 351 GeV⩽mH⩽404 GeV351 GeV⩽mH⩽404 GeV at 95% CL. |
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| Autores principais: | Onofre, A. |
| Outros Autores: | Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration |
| Assunto: | Standard Model Higgs boson ATLAS Ciências Naturais::Ciências Físicas |
| Ano: | 2012 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | A search for a heavy Standard Model Higgs boson decaying via View the MathML sourceH→ZZ→ℓ+ℓ−qq¯, where ℓ=eℓ=e or μ, is presented. The search uses a data set of pp collisions at View the MathML sources=7 TeV, corresponding to an integrated luminosity of 4.7 fb−14.7 fb−1 collected in 2011 by the ATLAS detector at the CERN LHC. No significant excess of events above the estimated background is found. Upper limits at 95% confidence level on the production cross section of a Higgs boson with a mass in the range between 200 and 600 GeV600 GeV are derived. A Standard Model Higgs boson with a mass in the range 300 GeV⩽mH⩽322 GeV300 GeV⩽mH⩽322 GeV or 353 GeV⩽mH⩽410 GeV353 GeV⩽mH⩽410 GeV is excluded at 95% CL. The corresponding expected exclusion range is 351 GeV⩽mH⩽404 GeV351 GeV⩽mH⩽404 GeV at 95% CL. |
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