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The angular distributions and the differential branching fraction of thedecay B0 to K*0(892) mu mu are studied using data corresponding to anintegrated luminosity of 20.5 inverse femtobarns collected with the CMSdetector at the LHC in pp collisions at sqrt(s) = 8 TeV. From 1430 signaldecays, the forward-backward asymmetry of the muons, the K*0(892) longitudinalpolarization fraction, and the differential branching fraction are determinedas a function of the dimuon invariant mass squared. The measurements are amongthe most precise to date and are in good agreement with standard modelpredictions.

Angular analysis of the decay B0 to K*0 mu mu from pp collisions at sqrt(s) = 8 TeV