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Two-body non-leptonic charmed decays $B_{(s)} \to D_{(s)}P$, $D_{(s)}^*P$,$D_{(s)}V$ and $D_{(s)}^*V$ are analyzed in perturbative QCD approach, where$P$ and $V$ denote the light pseudoscalar meson and vector meson, respectively.We test the $D$ meson wave function by a $\chi^2$ fit with experimental data ofsix $B\to DP$ channels. We give the branching ratios of all the charmed B decaychannels, most of which agree with experiments amazingly well. The predicted$B_s$ decays can be confronted with the future experimental data. Bystraightforward calculations, our pQCD approach gives the right relative strongphase of $a_2/a_1$ with experiments. We also predict the percentage oftransverse polarizations in $B_{(s)} \to D^* V$ decay channels.

The $B(B_s)\to D_{(s)} P$, $D_{(s)} V$, $D_{(s)}^{*}P$ and $D_{(s)}^{*}V$ decays in the perturbative QCD approach

The $B(B_s)\to D_{(s)} P$, $D_{(s)} V$, $D_{(s)}^{}P$ and $D_{(s)}^{}V$ decays in the perturbative QCD approach