Search for Standard Model Higgs Boson in H->WW->lνjj decay using 1.04 fb-1 of data recorded by the ATLAS Detector in pp Collision at sqrt(s) 7 TeV

We report the recent results for the Standard Model Higgs Boson searches using 1.04 fb-1 data during the 2011 run of the LHC. The analysis considers decay channels H->WW->lνjj where l = (e or μ)with final states containing a single charged lepton, exactly two or three jets, and missing transverse energy. No significant excess is observed over the expected background. For a Higgs boson mass 400 GeV, 95% confidence level upper bound on the cross-section for the Higgs boson production by the gluon fusion times the branching ratio for H->WW is 5.8 pb or approximately 2.9 times the Standard Model prediction.