Simulation Methods of the Processes B ! + V Including 0 ! Mixing Effects

Simulation methods for the decays B → � + � V , where V is a 1 vectormeson, are presented in detail. Emphasis is put on the use of the helicity formalism and the use of effective Lagrangians. We show the importance of � 0 − ! mixing in enhancing the direct CP violation (DCPV) when the pion-pion invariant mass is near the mass of the !.