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Results on SM Higgs boson searches at low mass from ATLAS

The Standard Model Higgs boson searches at low mass with the ATLAS experiment, in a dataset corresponding to an integrated luminosity of 4.6 to 4.9 fb1 of pp collision data collected at sqrts = 7 TeV at the LHC, are presented. A Standard Model Higgs boson is excluded at the 95% confidence level in t...

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Autor principal: Anastopoulos, C
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1484654
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author Anastopoulos, C
author_facet Anastopoulos, C
author_sort Anastopoulos, C
collection CERN
description The Standard Model Higgs boson searches at low mass with the ATLAS experiment, in a dataset corresponding to an integrated luminosity of 4.6 to 4.9 fb1 of pp collision data collected at sqrts = 7 TeV at the LHC, are presented. A Standard Model Higgs boson is excluded at the 95% confidence level in the region from 110 GeVto 117.5 GeV, 118.5 GeVto 122.5 GeV, and 129 GeVto 539 GeV, while the range 120 GeVto 555 GeVis expected to be excluded in the absence of a signal. The mass regions between 130 GeV and 486 GeV are excluded at the 99% CL. An excess of events is observed at Higgs boson mass hypotheses around 126 GeV with a local significance of 2.9 standard deviations ($\sigma$). The global probability for the background to produce an excess at least as significant anywhere in the entire explored Higgs boson mass range is estimated to be 15%, corresponding to a significance of approximately 1 $\sigma$.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-14846542019-09-30T06:29:59Zhttp://cds.cern.ch/record/1484654engAnastopoulos, CResults on SM Higgs boson searches at low mass from ATLASDetectors and Experimental TechniquesThe Standard Model Higgs boson searches at low mass with the ATLAS experiment, in a dataset corresponding to an integrated luminosity of 4.6 to 4.9 fb1 of pp collision data collected at sqrts = 7 TeV at the LHC, are presented. A Standard Model Higgs boson is excluded at the 95% confidence level in the region from 110 GeVto 117.5 GeV, 118.5 GeVto 122.5 GeV, and 129 GeVto 539 GeV, while the range 120 GeVto 555 GeVis expected to be excluded in the absence of a signal. The mass regions between 130 GeV and 486 GeV are excluded at the 99% CL. An excess of events is observed at Higgs boson mass hypotheses around 126 GeV with a local significance of 2.9 standard deviations ($\sigma$). The global probability for the background to produce an excess at least as significant anywhere in the entire explored Higgs boson mass range is estimated to be 15%, corresponding to a significance of approximately 1 $\sigma$.ATL-PHYS-PROC-2012-221oai:cds.cern.ch:14846542012-10-14
spellingShingle Detectors and Experimental Techniques
Anastopoulos, C
Results on SM Higgs boson searches at low mass from ATLAS
title Results on SM Higgs boson searches at low mass from ATLAS
title_full Results on SM Higgs boson searches at low mass from ATLAS
title_fullStr Results on SM Higgs boson searches at low mass from ATLAS
title_full_unstemmed Results on SM Higgs boson searches at low mass from ATLAS
title_short Results on SM Higgs boson searches at low mass from ATLAS
title_sort results on sm higgs boson searches at low mass from atlas
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1484654
work_keys_str_mv AT anastopoulosc resultsonsmhiggsbosonsearchesatlowmassfromatlas