Search for the b¯b decay of the Standard Model Higgs boson in associated (W/Z)H production with the ATLAS detector
A search for the b¯b decay of the Standard Model Higgs boson is performed with the ATLAS experiment using the full dataset recorded at the LHC in Run 1. The integrated luminosities used are 4.7 and 20.3 fb−1 from pp collisions at p s = 7 and 8TeV, respectively. The processes considered are associate...
| Autores: | , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2015 |
| País: | Argentina |
| Recursos: | Universidad Nacional de La Plata |
| Repositório: | SEDICI (UNLP) |
| Idioma: | inglês |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/79210 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/79210 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Ciencias Exactas Física hadron-hadron scattering standard model Higgs boson ATLAS experiment |
| Resumo: | A search for the b¯b decay of the Standard Model Higgs boson is performed with the ATLAS experiment using the full dataset recorded at the LHC in Run 1. The integrated luminosities used are 4.7 and 20.3 fb−1 from pp collisions at p s = 7 and 8TeV, respectively. The processes considered are associated (W/Z)H production, where W → e /μ , Z → ee/μμ and Z → vv. The observed (expected) deviation from the backgroundonly hypothesis corresponds to a significance of 1.4 (2.6) standard deviations and the ratio of the measured signal yield to the Standard Model expectation is found to be μ = 0.52 ± 0.32 (stat.) ± 0.24 (syst.) for a Higgs boson mass of 125.36 GeV. The analysis procedure is validated by a measurement of the yield of (W/Z)Z production with Z → b¯b in the same final states as for the Higgs boson search, from which the ratio of the observed signal yield to the Standard Model expectation is found to be 0.74 ± 0.09 (stat.) ± 0.14 (syst.). |
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