Measurement of the Drell –Yan Angular Coefficients with the CMS Experiment at LHC

Results of the angular coefficients measurement with the Drell-Yan muon pairs at 8 TeV are presented. A 0 through A 4 coefficients were measured in bins of muon pair transverse momentum and rapidity using the Compact Muon Solenoid (CMS) data collected during the first Large Hadron Collider (LHC) run (Run 1) in 2011 and 2012 corresponding to $19.7 fb^{−1}$. No deviations from the Standard Model (SM) predictions observed within uncertainties in the leading and next-to-leading orders.