Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC

A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb -1 to 4.9 fb -1 of pp collisions collected at s=7TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV a...

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Publicado: 2012
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n1_p49_Aad
http://hdl.handle.net/20.500.12110/paper_03702693_v710_n1_p49_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03702693_v710_n1_p49_Aad
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spelling paper:paper_03702693_v710_n1_p49_Aad2023-06-08T15:37:02Z Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb -1 to 4.9 fb -1 of pp collisions collected at s=7TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around m H ~126GeV with a local significance of 3.5 standard deviations (σ). The local significances of H→γγ, H→ZZ (z.ast;) →ℓ + ℓ - ℓ '+ ℓ '- and H→WW(z.ast;)→ℓ+νℓ'-ν- the three most sensitive channels in this mass range, are 2.8σ, 2.1σ and 1.4σ, respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be ~1.4% or, equivalently, 2.2σ. © 2012 CERN. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n1_p49_Aad http://hdl.handle.net/20.500.12110/paper_03702693_v710_n1_p49_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb -1 to 4.9 fb -1 of pp collisions collected at s=7TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around m H ~126GeV with a local significance of 3.5 standard deviations (σ). The local significances of H→γγ, H→ZZ (z.ast;) →ℓ + ℓ - ℓ '+ ℓ '- and H→WW(z.ast;)→ℓ+νℓ'-ν- the three most sensitive channels in this mass range, are 2.8σ, 2.1σ and 1.4σ, respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be ~1.4% or, equivalently, 2.2σ. © 2012 CERN.
title Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
spellingShingle Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
title_short Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
title_full Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
title_fullStr Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
title_full_unstemmed Combined search for the Standard Model Higgs boson using up to 4.9 fb -1 of pp collision data at s=7TeV with the ATLAS detector at the LHC
title_sort combined search for the standard model higgs boson using up to 4.9 fb -1 of pp collision data at s=7tev with the atlas detector at the lhc
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v710_n1_p49_Aad
http://hdl.handle.net/20.500.12110/paper_03702693_v710_n1_p49_Aad
_version_ 1768545786954514432

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