On direct CP violation in B → D0 K π's versus anti B → D0 anti K π's decays

We discuss a class of decay modes for charged as well as neutral B mesons where direct CP violation could produce asymmetries of the order of a few percent. Even an asymmetry as large as 10% is conceivable though admittedly optimistic. Two essential ingredients for such an asymmetry are the presence of the V(ub) coupling and the intervention of nontrivial final state interactions; these two elements are also at the origin of large numerical uncertainties in the predictions. The third essential ingredient is the observation that D0 and anti D0 mesons cannot be distinguished as a matter of principle if they decay into Ks+pions. Such asymmetries can be searched for equally well on and off the Υ (4S) resonance. (orig.)