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Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector

This note presents an updated search with the ATLAS experiment for the Standard Model Higgs boson produced in association with a $W$ or $Z$ boson and decaying to $b\bar{b}$ using 4.7~\ifb\ of LHC proton-proton data at \SevenTeV\ and 13.0~\ifb\ at \EightTeV. The search is performed using events conta...

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Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1493625
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description This note presents an updated search with the ATLAS experiment for the Standard Model Higgs boson produced in association with a $W$ or $Z$ boson and decaying to $b\bar{b}$ using 4.7~\ifb\ of LHC proton-proton data at \SevenTeV\ and 13.0~\ifb\ at \EightTeV. The search is performed using events containing zero, one or two electrons or muons targeting the three decay modes \vvbb, \lvbb and $ZH \to \ell^+\ell^- b\bar{b}$. No significant excess is observed. For $m_H = 125$~GeV, the observed (expected) upper 95\% confidence level limit on the cross section times the branching ratio is found to be 1.8 (1.9) times the Standard Model prediction. A Standard Model Higgs boson with $m_H = 110$~GeV is excluded. As a validation of the analysis procedure, the production of diboson pairs, $WZ$ and $ZZ$, with a $Z$ boson decaying to $b\bar{b}$, has been observed with a significance of 4.0 standard deviations and a rate compatible with the Standard Model expectation.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
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spelling cern-14936252021-04-18T19:37:50Zhttp://cds.cern.ch/record/1493625engThe ATLAS collaborationSearch for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detectorDetectors and Experimental TechniquesThis note presents an updated search with the ATLAS experiment for the Standard Model Higgs boson produced in association with a $W$ or $Z$ boson and decaying to $b\bar{b}$ using 4.7~\ifb\ of LHC proton-proton data at \SevenTeV\ and 13.0~\ifb\ at \EightTeV. The search is performed using events containing zero, one or two electrons or muons targeting the three decay modes \vvbb, \lvbb and $ZH \to \ell^+\ell^- b\bar{b}$. No significant excess is observed. For $m_H = 125$~GeV, the observed (expected) upper 95\% confidence level limit on the cross section times the branching ratio is found to be 1.8 (1.9) times the Standard Model prediction. A Standard Model Higgs boson with $m_H = 110$~GeV is excluded. As a validation of the analysis procedure, the production of diboson pairs, $WZ$ and $ZZ$, with a $Z$ boson decaying to $b\bar{b}$, has been observed with a significance of 4.0 standard deviations and a rate compatible with the Standard Model expectation.ATLAS-CONF-2012-161oai:cds.cern.ch:14936252012-11-14
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title_full Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title_fullStr Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title_full_unstemmed Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title_short Search for the Standard Model Higgs boson in produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector
title_sort search for the standard model higgs boson in produced in association with a vector boson and decaying to bottom quarks with the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1493625
work_keys_str_mv AT theatlascollaboration searchforthestandardmodelhiggsbosoninproducedinassociationwithavectorbosonanddecayingtobottomquarkswiththeatlasdetector