Search for a heavy Standard Model Higgs boson in the channel H→ZZ→ℓ[superscript +]ℓ[superscript −]q[bar over q] using the ATLAS detector
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Aad-2012-Search for a heavy S.pdf
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1.32 MB
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Author(s)
Taylor, Frank E.
Date Issued
December 2011
Journal
Physics Letters B
Publisher
Elsevier
Citation
Aad, G., B. Abbott, J. Abdallah, A.A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, et al. “Search for a Heavy Standard Model Higgs Boson in the Channel H→ZZ→ℓ[superscript +]ℓ[superscript −]q[bar over q] Using the ATLAS Detector.” Physics Letters B 707, no. 1 (January 2012): 27–45. © 2011 CERN
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Final published version
Abstract
A search for a heavy Standard Model Higgs boson decaying via View the H→ZZ→ℓ[superscript +]ℓ[superscript −]q[bar over q], 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[superscript −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 GeV600 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2011.11.056
