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Title

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

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physics Letters. B. 2012, vol. 717, no. 1-3, p. 70-88
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 bosonATLAS
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ATLAS COLLABORATION. 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. In: Physics Letters. B, 2012, vol. 717, n° 1-3, p. 70-88. https://archive-ouverte.unige.ch/unige:40161

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Deposited on : 2014-09-12

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