FRAMEWORK FOR IDENTIFICATION OF NEUTRAL BETA-MESONS

We introduce a method for the study of CP-violating asymmetries in tag ged states of neutral B mesons with arbitrary coherence properties. A set of time-dependent measurements is identified which completely spec ifies the density matrix of the initial state in a two-component space with basis vectors B0 and B0BAR, and permits a determination of phase s in the Cabibbo-Kobayashi-Maskawa matrix. For a given tagging configu ration, the measurement of decays both to flavor eigenstates and to CP eigenstates provides the necessary information.