Measurement of the isospin asymmetry in $B\to K^{(\ast )}{\mu }^{+}{\mu }^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +615

The isospin asymmetries of $B\to K^{(\ast )}{\mu }^{+}{\mu }^{-}$ decays and the partial branching fractions of $B^0\to K^0{\mu }^{+}{\mu }^{-}$ and $B^{+}\to K^{\ast +}{\mu }^{+}{\mu }^{-}$ are measured as a function of the di-m…