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Compact Muon Solenoid
LHC, CERN

CMS-PAS-BPH-11-009
Angular analysis and branching ratio measurement of the decay B0 to K*0 mu+ mu-
Abstract: The angular distributions and the differential branching fraction of the decay$\text{B}^{0} \rightarrow \text{K}^{*0} \mu^{+} \mu^{-}$ are studied using an integrated luminosity of 5.2~\fbinv of data collected with the CMS detector. The forward-backward asymmetry of the muons $A_{FB}$, the $\text{K}^{\ast 0}$ longitudinal polarization fraction $F_{L}$, and the differential branching fraction ${\rm d}\mathcal{B}/{\rm d}q^{2}$, are determined as a function of the dimuon invariant mass squared. The measurements are in good agreement with the standard model.
Compact Muon Solenoid
LHC, CERN