Search for a standard model Higgs boson in the mass range 200-600 GeV in the $H \to ZZ \to \ell^+ \ell^- q \bar{q}$ decay channel with the ATLAS detector

Tanasijczuk, Andres Jorge;ATLAS;et.al.
(2012) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 717, p. 70 (2012)

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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−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 GeV are derived. A Standard Model Higgs boson with a mass in the range 300 GeV⩽mH⩽322 GeV or 353 GeV⩽mH⩽410 GeV is excluded at 95% CL. The corresponding expected exclusion range is 351 GeV⩽mH⩽404 GeV at 95% CL.
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Tanasijczuk, A. J., ATLAS, & et al. (2012). Search for a standard model Higgs boson in the mass range 200-600 GeV in the $H \to ZZ \to \ell^+ \ell^- q \bar{q}$ decay channel with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 717, 70. https://doi.org/10.1016/j.physletb.2012.09.020 (Original work published 2012)