Long distance contributions in $B\toK^*\ell^+\ell^-$ decays with   polarized $K^*$
  We use momentum correlations as physical observables in $B\to K^{*}l^{+}l^{-}$ decays with $K^{*}$ 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. 
Chuan-Hung Chen and C.Q. Geng