Short- vs. long-distance physics in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$: a data-driven analysis

Marzia Bordone, Gino isidori, Sandro Mächler +1

We analyze data on $B\to K{\mu }^{+}{\mu }^{-}$ and $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ decays in the whole dilepton invariant mass spectrum with the aim of disentangling short- vs. long-distance contributions. Th…