Search for the Standard Model Higgs boson through the $H \to ZZ$ decay channels with the ATLAS detector

The search for the Standard Model Higgs boson via its decays into two Z bosons is presented, based on the 4.7-4.9 fb-1 of proton-proton collision data at a center-of-mass energy of 7 TeV, recorded in 2011 by the ATLAS experiment at the LHC. The results obtained in the fully leptonic decay channel cover a wide range of Higgs boson mass hypotheses, between 110 GeV and 600 GeV. For Higgs boson masses above 200 GeV, the sensitivity is substantially enhanced by using channels in which one of the Z bosons decays into neutrinos or quarks. With the current integrated luminosity, a wide mass range is excluded at the 95% confidence level.