Search for a Standard Model Higgs Boson in the Mass Range 200-600 GeV in the Channels H -> ZZ -> llnunu and H -> ZZ -> llqq with the ATLAS Detector

This note summarizes preliminary results on the search for a Standard Model Higgs boson with a mass in the range between 200~GeV and 600~GeV in the channels H -> ZZ -> llnunu and H -> ZZ -> llqq. A Higgs boson in this mass range could be observed or excluded with of the order of a fb^-1 of LHC data. No evidence for the production of a Higgs boson is observed in a dataset of pp collisions corresponding to approximately 35 pb^-1 of integrated luminosity recorded by the ATLAS experiment at the LHC in 2010. Upper limits on the Higgs-boson production cross-sections are presented.