Mixing and CP Violation in Neutral D-meson Decays
نویسنده
چکیده
D0−D̄0 mixing at the detectable level or significant CP violation in the charm system may strongly signify the existence of new physics. In view of the large discovery potential associated with the fixed target experiments, the B-meson factories and the τ -charm factories, we make a further study of the phenomenology of D0 − D̄0 mixing and CP violation in neutral D-meson decays. The generic formulas for the time-dependent and time-integrated decay rates of both coherent and incoherent D0D̄0 events are derived, and their approximate expressions up to the second order of the mixing parameters xD and yD are presented. Explicitly we discuss D 0− D̄0 mixing and various CP -violating signals in neutral D decays to the semileptonic final states, the hadronic CP eigenstates, the hadronic non-CP eigenstates and the CP -forbidden states. A few non-trivial approaches to the separate determination of xD and yD and to the examination of direct and indirect CP asymmetries in the charm sector are suggested. [PACS number(s): 11.30.Er, 13.25.Ft, 14.40.Lb] Electronic address: [email protected] 1
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