Measurement of angular observables in the decay B+ to K+ mu+ mu- from proton-proton collisions at sqrt[s]=8TeV

The angular distribution of the flavor-changing neutral current decay $\mathrm{B}^{+}$$\to$$\mathrm{K}^{+}$$\mu^+\mu^-$ is studied in pp collisions at the center-of-mass energy of $8~\mathrm{TeV}$. The analysis is based on data collected by the CMS detector at the LHC, corresponding to an integrated luminosity of $20.5~\mathrm{fb}^{-1}$. The forward-backward asymmetry $A_{FB}$ of the dimuon system and the contribution $F_{H}$ from the pseudo-scalar, scalar, and tensor amplitudes to the decay width are measured with respect to the squared dimuon mass. The measurements are consistent with the standard model expectations.