Search for a Standard Model Higgs Boson in the H→ZZ→ℓ+ℓ−νν¯¯ Decay Channel with the ATLAS Detector

Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Eva and Brodbeck, Timothy and Catmore, James and Chilingarov, Alexandre and Davidson, Ruth and de Mora, Lee and Fox, Harald and Henderson, Robert and Hohlfeld, M. and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Ratoff, Peter and Sloan, Terence and Smizanska, Maria and Walder, James (2011) Search for a Standard Model Higgs Boson in the H→ZZ→ℓ+ℓ−νν¯¯ Decay Channel with the ATLAS Detector. Physical review letters, 107 (22). ISSN 1079-7114

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A search for a heavy standard model Higgs boson decaying via H→ZZ→ℓ+ℓ−νν¯, where ℓ=e, μ, is presented. It is based on proton-proton collision data at s√=7  TeV, collected by the ATLAS experiment at the LHC in the first half of 2011 and corresponding to an integrated luminosity of 1.04  fb−1. The data are compared to the expected standard model backgrounds. The data and the background expectations are found to be in agreement and upper limits are placed on the Higgs boson production cross section over the entire mass window considered; in particular, the production of a standard model Higgs boson is excluded in the region 340<mH<450  GeV at the 95% confidence level.

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Journal Article
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Physical review letters
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Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2011 CERN, for the ATLAS Collaboration
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24 Jan 2014 05:49
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04 Aug 2020 02:30