  Motivated by the possible discrepancy between the observed CP asymmetry and
that of standard model expectation in the decay mode B^0 -> phi K_S, we study
the corresponding vector vector decay mode B^0 -> phi K^*. In order to obtain
decisive information regarding the CP violating effect, we made the angular
distribution analysis of the decay products, where both the outgoing vector
mesons decay into two pseudoscalars. Furthermore, we study the possible effects
of new physics using the angular distribution observables.
