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The search for Higgs production associated with W,Z with Higgs decaying into WW or tau

At the LHC[1], 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 ∼ 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 τ-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[2] during 2011 and 2012 and corresponding to an integrated luminosity of 4.9 f b−1 at √ s = 7 TeV and 19.5 f b−1 at √ 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.