Search for the Standard Model Higgs boson in the H->WW->lvlv, lvqq decay modes with the ATLAS detector.

A Higgs boson search in the H->WW (lvlv, lvqq) decay mode has been performed using proton-proton collisions recently recorded by the ATLAS detector. The search in the final state with two leptons and two neutrinos covers a broad mass range from 110 - 600 GeV. Upper limits are derived on the cross section of a Standard Model Higgs boson.The semi-leptonic final state with a lepton, neutrino and two or more jets provides additional sensitivity to the fully-leptonic decay mode in the high mass region from 300 to 600 GeV. First results on the search of the Higgs boson in the associate production $WH, H \to WW, W\to l\nu$ final state are presented.