Electroweak bosons in CMS

The Compact Muon Solenoid (CMS) is fully equipped to measure leptonic decays of electroweak probes in the high multiplicity environment of nucleus-nucleus collisions. The inclusive and differential measurements of the $Z$ boson yield in the muon and electron decay channels are presented, establishing that no modification is observed with respect to pp collisions, scaled by the number of elementary nucleon-nucleon collisions. Measurements of the yield of $W$ bosons decaying into a muon and a(n anti)neutrino as a function of centrality, and the $W$ charge asymmetry as a function of rapidity show no modifications beyond the expected effect of isospin when compared to pp collisions.