  Exploiting the large number of collected events and the symmetries in the W
production and decay at LHC, it is possible to measure the W double
differential cross section of transverse momentum and rapidity and the angular
coefficients. With the proposed method a determination of the integrated
spectrum of transverse momentum of W bosons is possible with an unprecedented
granularity and increased precision with respect to the state-of-the-art
generators. This enables the possibility to perform a theory-agnostic
measurement of the W mass with competitive uncertainty by constraining the W
production directly on data. This paper shows preliminary results derived on a
subset of events collected by CMS during Run 2, for an integrated luminosity of
36 fb-1.
