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

Abstract

We use momentum correlations as physical observables in $B\to K^{\ast }{l}^{+}{l}^{-}$ decays with $K^{\ast }$ 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.

Comments: LaTex, 13 pages, 4 figures, accepted for publication in PRD