How far can we study CP nonconservation?

In the Standard Model B mesons can exhibit rather large CP-odd effects, the largest are expected in neutral B mesons. Contrary to the K mesons the superweak CP non-conservation is inevitably small in B mesons. The CP-odd effects of the order of 30% are expected in rare decays with branching ratio of order of 10−5. The tagging of the B meson's flavour is needed. For Bsa mesons the study of the time dependence of the decay events is also necessary.