Search for SM Higgs decaying to WW to lvlv and lvqq at CMS

A search for the standard model Higgs boson decaying to W$^+$W$^-$. The pp collisions data sample corresponds to an integrated luminosity of 5.1~fb$^{-1}$ at $\sqrt{s}$ = 7 TeV and 5.1~fb$^{-1}$ at $\sqrt{s}$ = 8 TeV, collected by the CMS detector at the LHC. The W$^+$W$^-$ candidates are selected in events in the fully leptonic or semi leptonic final state. Upper limits on the Higgs boson production relative to the standard model Higgs expectation are derived. The standard model Higgs boson is excluded in the mass range 129--520~GeV at 95\% confidence level from the fully leptonic channel and in the mass ranges 260--460~GeV from the semi-leptonic channel. A 1.6 $\sigma$ (2.4 $\sigma$) excess of events is observed (expected) for low Higgs boson masses which makes the observed limits weaker than the expected ones under the null hypothesis.