Standard Model Higgs Discovery Potential of CMS in the $H \to WW\to l\nu l\nu$ channel

The Standard Model Higgs discovery potential of CMS in the H->WW->lnulnu channel is presented. The results are based on a full detector simulation and include the last theoretical developments for background and signal simulation. A first estimate of the expected systematics is also performed. If the Standard Model Higgs has a mass between 150GeV and 180GeV, it should be discovered with more than 5sigma significance with a luminosity of 10fb-1