2019 Impact factor 4.389
Particles and Fields
Eur. Phys. J. C 9, 557-564
DOI 10.1007/s100529900073

CP violation in two-body hadronic decays of Bc mesons

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 $B_{c}^-\rightarrow{\bar D}^{*0}K^{*-}$, ${\bar D}^{0}K^{*-}$, ${\bar D}^{*0}
K^{-}$, ${\bar D}^{0}K^{-}$, and $B_{c}^-\rightarrow{\eta}_{c}D^{-}$,each of them needs about 108 of $B_{c}^{\pm}$ events in experiment.

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