en
Scientific article
English

Search for a Standard Model Higgs boson in the mass range 200–600 GeV in the H -> ZZ -> ℓ+qq decay channel with the ATLAS Detector

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 717, no. 1-3, p. 70-88
Publication date2012
Abstract

A search for a heavy Standard Model Higgs boson decaying via H→ZZ→ℓ+ℓ−qq, where ℓ=e or μ, is presented. The search uses a data set of pp collisions at √s=7 TeV, corresponding to an integrated luminosity of 4.7 fb−14.7 fb−1 collected in 2011 by the ATLAS detector at the CERN LHC. No significant excess of events above the estimated background is found. Upper limits at 95% confidence level on the production cross section of a Higgs boson with a mass in the range between 200 and 600 GeV600 GeV are derived. A Standard Model Higgs boson with a mass in the range 300 GeV⩽mH⩽322 GeV300 GeV⩽mH⩽322 GeV or 353 GeV⩽mH⩽410 GeV353 GeV⩽mH⩽410 GeV is excluded at 95% CL. The corresponding expected exclusion range is 351 GeV⩽mH⩽404 GeV351 GeV⩽mH⩽404 GeV at 95% CL.

Keywords
  • Standard Model Higgs boson
  • ATLAS
Citation (ISO format)
ATLAS Collaboration. Search for a Standard Model Higgs boson in the mass range 200–600 GeV in the H -&gt; ZZ -&gt; ℓ<sup>+</sup>ℓ<sup>−</sup>qq decay channel with the ATLAS Detector. In: Physics letters. B, 2012, vol. 717, n° 1-3, p. 70–88. doi: 10.1016/j.physletb.2012.09.020
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ISSN of the journal0370-2693
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