Search for a Standard Model Higgs boson in the mass range 200-600GeV in the H→ZZ→ℓ+ℓ-qq̄ decay channel with the ATLAS detector

Search for a Standard Model Higgs boson in the mass range 200-600GeV in the H→ZZ→ℓ+ℓ-qq̄ decay channel with the ATLAS detector

A search for a heavy Standard Model Higgs boson decaying via H→ZZ→ℓ+ℓ-qq̄, where ℓ=e or μ, is presented. The search uses a data set of pp collisions at s=7TeV, corresponding to an integrated luminosity of 4.7fb-1 collected in 2011 by the ATLAS detector at the CERN LHC. No significant excess of event...

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Bibliographic Details
Main Authors: Aad, G, Abbott, B, Abdallah, J, Abdel Khalek, S, Abdelalim, A, Abdinov, O, Abi, B, Abolins, M, AbouZeid, O, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, B, Adamczyk, L, Adams, D, Addy, T, Adelman, J, Adomeit, S, Adragna, P, Adye, T, Aefsky, S, Aguilar-Saavedra, J, Agustoni, M
Format: Journal article
Published: 2012
Description
Summary:A search for a heavy Standard Model Higgs boson decaying via H→ZZ→ℓ+ℓ-qq̄, where ℓ=e or μ, is presented. The search uses a data set of pp collisions at s=7TeV, corresponding to an integrated luminosity of 4.7fb-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 600GeV are derived. A Standard Model Higgs boson with a mass in the range 300GeV≤mH≤322GeV or 353GeV≤mH≤410GeV is excluded at 95% CL. The corresponding expected exclusion range is 351GeV≤mH≤404GeV at 95% CL. © 2012 CERN.

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