Phenomenology of neutral D-meson decays and double-flavour oscillations
Petersburg Nuclear Physics Institute, Gatchina, St.Petersburg, 188350, Russia
Received: 13 August 1998 Communicated by V.V. Anisovich
Decays of neutral D-mesons are considered phenomenologically without invoking any particular models. Special attention is given to cascade decays with intermediate neutral kaons where coherent double-flavour oscillations (CDFO) become possible. We show necessity and unique possibilities of experiments on CDFO. They allow to relate with each other widths and masses of D-meson eigenstates, to separate interference effects due to D0- mixing and/or Cabibbo-favoured vs. doubly-suppressed transitions. Such experiments provide the only known ways to unambiguous model-independent measurements of all CP-violating parameters and of Cabibbo-doubly-suppressed amplitudes, where the New Physics may have more prominent manifestations. Similar experiments would be useful and interesting also for charged D-meson decays to neutral kaons.
11.30.Er Charge conjugation, parity, time reversal and other discrete symmetries - 13.25.Ft Decays of charmed mesons - 14.40.Lb Charmed mesons