Higgs boson searches using the H → WW(∗) 5 → ℓνℓν (ℓ = e, μ) decay mode have been performed with 35 pb−1 of ATLAS data at 7 TeV proton-proton centre-of-mass energy. No evidence for a SM-like Higgs boson has been found. Rather, the SM Higgs exclusion limit as function of the Higgs mass has been presented in the mass range of 120-200 GeV. At 160 GeV, a Standard Model-like Higgs boson with a production rate of 1.2 times the Standard Model rate is excluded at 95% Confidence Level. The 95% Confidence Level upper limit on σ × BR(H → WW(∗)) is 54 pb at m_H = 120 GeV, 11 pb at m_H = 160 GeV and 71 pb at m_H = 200 GeV.

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