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[submitted] Journal of High Energy Physics

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Search for the bb¯ decay of the Standard Model Higgs boson in associated (W/Z)H production with the ATLAS detector

ATLAS Collaboration (Georges Aad (Marseille, CPPMet al.) Show all 2892 authors

Sep 22, 2014 - 69 pages

Abstract (arXiv)

A search for the bb¯ 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 from pp collisions at s√=7 and 8 TeV are 4.7 and 20.3 fb−1, respectively. The processes considered are associated (W/Z)H production, where Weν/μν, Zee/μμ and Zνν. The observed (expected) deviation from the background-only 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 Zbb¯ 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.).

0.74±0.09(stat.)±0.14(syst.).


Note: *Temporary entry* 
Note: 69 pages plus author list + cover pages (93 pages total), 25 figures, 11 tables, submitted to JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-23/ 
Keyword(s): INSPIRE: * Automatic Keywords * | yield: ratio: measured | Higgs particle: mass | p p: scattering | ATLAS | CERN LHC Coll

 


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Date: 30.09.2014 11:53:07 Count: 301