Publicação
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
| Resumo: | A search for the Standard Model Higgs boson in proton–proton collisions with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities of approximately 4.8 fb−1 collected at View the MathML sources=7 TeV in 2011 and 5.8 fb−1 at View the MathML sources=8 TeV in 2012. Individual searches in the channels H→ZZ(⁎)→4ℓH→ZZ(⁎)→4ℓ, H→γγH→γγ and H→WW(⁎)→eνμνH→WW(⁎)→eνμν in the 8 TeV data are combined with previously published results of searches for H→ZZ(⁎)H→ZZ(⁎), WW(⁎)WW(⁎), View the MathML sourcebb¯ and τ+τ−τ+τ− in the 7 TeV data and results from improved analyses of the H→ZZ(⁎)→4ℓH→ZZ(⁎)→4ℓ and H→γγH→γγ channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of View the MathML source126.0±0.4(stat)±0.4(sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7×10−91.7×10−9, is compatible with the production and decay of the Standard Model Higgs boson. |
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| Autores principais: | Onofre, A. |
| Outros Autores: | Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration |
| Assunto: | Ciências Naturais::Ciências Físicas 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 the Standard Model Higgs boson in proton–proton collisions with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities of approximately 4.8 fb−1 collected at View the MathML sources=7 TeV in 2011 and 5.8 fb−1 at View the MathML sources=8 TeV in 2012. Individual searches in the channels H→ZZ(⁎)→4ℓH→ZZ(⁎)→4ℓ, H→γγH→γγ and H→WW(⁎)→eνμνH→WW(⁎)→eνμν in the 8 TeV data are combined with previously published results of searches for H→ZZ(⁎)H→ZZ(⁎), WW(⁎)WW(⁎), View the MathML sourcebb¯ and τ+τ−τ+τ− in the 7 TeV data and results from improved analyses of the H→ZZ(⁎)→4ℓH→ZZ(⁎)→4ℓ and H→γγH→γγ channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of View the MathML source126.0±0.4(stat)±0.4(sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7×10−91.7×10−9, is compatible with the production and decay of the Standard Model Higgs boson. |
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