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CP violation in two-body hadronic decays of \(B_c\) mesons

  • Youshan Dai
  • Dongsheng Du
Theoretical physics

Abstract.

Using the next-to-leading-order low-energy effective Hamiltonian, the CP asymmetries for \(B_ c\)-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 \(B_ c\) decays would be \(B_ c^-\rightarrow{\bar D}^{*0}K^{*-}\), \({\bar D}^{0}K^{*-}\), \({\bar D}^{*0} K^{-}\), \({\bar D}^{0}K^{-}\), and \(B_ c^-\rightarrow{\eta}_ cD^{-}\), each of them needs about \(10^8\) of \(B_ c^{\pm}\) events in experiment.

Keywords

Matrix Element Calculated Result Previous Treatment Decay Mode Amplitude Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Youshan Dai
    • 1
  • Dongsheng Du
    • 1
  1. 1. Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), Beijing, 100039, P.R. China CN

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