Measurements of the S-wave fraction in $B^0\to K^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ decays and the $B^0\to K^{\ast }(892{)}^0{\mu }^{+}{\mu }^{-}$ differential branching fraction

LHCb collaboration, R. Aaij, B. Adeva +731

A measurement of the differential branching fraction of the decay $B^0\to K^{\ast }(892{)}^0{\mu }^{+}{\mu }^{-}$ is presented together with a determination of the S-wave fraction…