Long distance contributions in $B{\text{toK}}^{\ast }{\mathrm{\ell }}^{+}{\mathrm{\ell }}^{-}$ decays with polarized $K^{\ast }$

We use momentum correlations as physical observables in $B\to K^{}l^{+}l^{-}$decayswith$K^{}$ polarized to study the long distance contributions. We show that these observables are sensitive to the scenarios of the long distance parametrizations. We find that the T-odd observable is directly related to the nonfactorizable effect in the standard model.