Youshan Dai1,2 - Dongsheng Du1
1 Institute of High Energy Physics,
Chinese Academy of Sciences,
P.O. Box 918(4), Beijing, 100039, P.R. China
2 Department of Physics, Hangzhou University, Hangzhou, 310028, P.R. China
Received: 17 December 1998 / Published online: 30 June 1999
Using the next-to-leading-order low-energy effective Hamiltonian, the CP asymmetries for Bc-meson decays into meson pairs are calculated in the spectator approximation. We do not compute the hadronic matrix elements directly; instead, we use the amplitude ratios to estimate the CP asymmetries. This is quite different from previous treatments in the literature. The values of the momentum squared carried by the virtual particles in timelike penguin diagrams are also carefully discussed. From our calculated results, the best decay modes to observe CP violation in Bc decays would be , , , , and ,each of them needs about 108 of events in experiment.