$H \rightarrow W W^{*} \rightarrow 2l 2\nu$ search in the CMS experiment with 2011 and 2012 LHC data.

The search for the standard model Higgs boson in the $H\to WW^{*} \to 2l 2\nu$ channel with the CMS detector is described. This analysis is performed in categories, depending of the number of jets and the lepton flavour, in order to enhance the Higgs signal respect to the expected irreducible backgrounds. The largest backgrounds are estimated with data-driven methods. In some categories, a fit with a 2D template, using kinematic variables, is performed to improve the sensitivity and to be sensitive to the Higgs boson spin and parity. The result with 5.1 $fb^{-1}$ of data recorded in 2011 at 7 TeV in the center of mass and with 19.5 $fb^{-1}$ recorded at 8 TeV in 2012 is presented.