Scientific article

Search for a heavy Standard Model Higgs boson in the channel H -> ZZ -> ℓ+qq using the ATLAS detector

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 707, no. 1, p. 27-45
Publication date2012

A search for a heavy Standard Model Higgs boson decaying via H→ZZ→ℓ+ℓ−qq, where ℓ=e,μ, is presented. The search is performed using a data set of pp collisions at √s=7 TeV, corresponding to an integrated luminosity of 1.04 fb−1 collected in 2011 by the ATLAS detector at the CERN LHC collider. No significant excess of events above the estimated background is found. Upper limits at 95% confidence level on the production cross section (relative to that expected from the Standard Model) of a Higgs boson with a mass in the range between 200 and 600 GeV are derived. Within this mass range, there is at present insufficient sensitivity to exclude a Standard Model Higgs boson. For a Higgs boson with a mass of 360 GeV, where the sensitivity is maximal, the observed and expected cross section upper limits are factors of 1.7 and 2.7, respectively, larger than the Standard Model prediction.

  • Standard Model Higgs boson
Citation (ISO format)
ATLAS Collaboration. Search for a heavy Standard Model Higgs boson in the channel <em>H -&gt; ZZ -&gt; ℓ<sup>+</sup>ℓ<sup>−</sup>qq</em> using the ATLAS detector. In: Physics letters. B, 2012, vol. 707, n° 1, p. 27–45. doi: 10.1016/j.physletb.2011.11.056
Main files (1)
Article (Published version)
ISSN of the journal0370-2693

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