First Results on Higgs to WW at $\sqrt{s}=13$ TeV with CMS detector

The first measurement of the Higgs boson cross section at 13 TeV in $H \to WW \to 2 \ell 2 \nu$ decay channel, will be show. The event sample corresponds to an integrated luminosity of $2.3 \pm 0.1 \text{ fb}^{−1}$ , collected by the CMS detector in 2015 at the LHC. This study has a central role to further constrain the Higgs boson measurements: any deviation from the Standard Model predictions would be a direct sign of new physics. The excellent resolution of the CMS experiment allows to identify the particles emerging from $W^+ W^−$ decay with hight degree of precision.