DOB Mixing and CP Violation in D Decays - Can There Be High Impact Physics in Charm Decays?*

of the Abstract: There certainly can be! Abstract: The phenomenology of Do-B’ mixing and of CP violation in D decays is described. Semiquantitative predictions based on the Standard Model are given on the possible strength of these phenomena. It is pointed out that New Physics beyond the Standard Model would probably enhance these phenomena in quite a significant way. To justify a New Initiative one has to be able to probe Do-D’ mixing down to r~= 10e4 (or better) and CP asymmetries down to 1 % (or better). It is of obvious benefit for such searches if one is able to track the proper time evolution of these decays by locating the decay vertices. Yet this can hardly be achieved if one uses e+eannihilation operating in the charm threshold region. It is discussed in some detail how the same kind of dynamical information can be obtained even without visible decay vertices, namely by employing Dfs decay correlations in a judicious fashion. The phenomenology of Do-B’ mixing and of CP violation in D decays is described. Semiquantitative predictions based on the Standard Model are given on the possible strength of these phenomena. It is pointed out that New Physics beyond the Standard Model would probably enhance these phenomena in quite a significant way. To justify a New Initiative one has to be able to probe Do-D’ mixing down to r~= 10e4 (or better) and CP asymmetries down to 1 % (or better). It is of obvious benefit for such searches if one is able to track the proper time evolution of these decays by locating the decay vertices. Yet this can hardly be achieved if one uses e+eannihilation operating in the charm threshold region. It is discussed in some detail how the same kind of dynamical information can be obtained even without visible decay vertices, namely by employing Dfs decay correlations in a judicious fashion. * Invited talk given at the Tau-Charm Factory Workshop, SLAC, Stanford, May 23-27,1989.