Combined search for the Standard Model Higgs boson in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Abstract

A combined search for the Standard Model Higgs boson with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities from 4.6 fb^-1 to 4.9 fb^-1 of proton-proton collisions collected at sqrt(s) = 7 TeV in 2011. The Higgs boson mass ranges of 111.4 GeV to 116.6 GeV, 119.4 GeV to 122.1 GeV, and 129.2 GeV to 541 GeV are excluded at the 95% confidence level, while the range 120 GeV to 560 GeV is expected to be excluded in the absence of a signal. 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 of 110-600 GeV is estimated to be ~15%, corresponding to a significance of approximately one sigma.

19 pages plus author list (32 pages total), 10 figures, 4 tables, revised author list, no change in the manuscript, accepted for publication in Physical Review D

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• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
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• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• Search for the Standard Model Higgs boson in the diphoton decay channel with 4.9 fb-1 of pp collisions at sqrt(s) = 7 TeV with ATLAS
• Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collision data at sqrt(s) = 7 TeV with ATLAS
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Cited by in corpus (10)

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• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Revisiting Theories with Enhanced Higgs Couplings to Weak Gauge Bosons
• Combined search for the standard model Higgs boson decaying to b bbar using the D0 Run II data set
• Search for the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set
• B decay anomalies in an effective theory
• Search for the standard model Higgs boson in the ZH->vvbb channel in 9.5 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV
• Search for a Higgs boson in the diphoton final state using the full CDF data set from proton-antiproton collisions at \surds = 1.96 TeV
• Effective field theory approach to the Higgs lineshape
• Production of multiple charged Higgs bosons in 3-3-1 models