The search for Higgs production associated with W, Z with Higgs decaying into WW or taus in CMS

At the LHC, the Standard Model (SM) Higgs boson is expected to be produced mainly from gluon and vector boson fusion. Higgs production in association with vector bosons ($WH$, $ZH$) is $\sim$ one order of magnitude lower. The associated production provides higher background rejection achieved through the additional highly energetic leptons from the $W/Z$ decays. Higgs decays into $\tau$-lepton or W boson pairs cover the low and intermediate/high Higgs mass range, respectively. For these reasons a search for WH with three-lepton final states is performed based on the data from proton-proton collisions collected with the CMS detector during 2011 and 2012 and corresponding to an integrated luminosity of 4.9 $fb^{-1}$ at $\sqrt{s} =7$ TeV and 19.5 $fb^{-1}$ at $\sqrt{s}=8$ TeV respectively. A data-driven technique, the fake-rate method, has been used for background estimation. No significant excess of events above the standard model background expectation is observed, so upper limits are set at 95\% CL on the SM Higgs boson production cross-section