Non-local matrix elements in $B_{(s)}\to \{K^{(\ast )},\varphi \}{\ell }^{+}{\ell }^{-}$

Nico Gubernari, Danny van Dyk, Javier Virto

We revisit the theoretical predictions and the parametrization of non-local matrix elements in rare ${\bar{B}}_{(s)}\to \{{\bar{K}}^{(\ast )},\varphi \}{\ell }^{+}{\ell }^{-}$ and $\bar{B}_{(s)}…