We study the decay modes of B_{ s}^{ 0}(\bar{ B}_{ s}^{ 0})-->D_{ s}^{ \pm} K^{ \mp}, B_{ s}^{ 0}(\bar{ B}_{ s}^{ 0})-->D^{ \pm} \pi^{ \mp} and B^{ 0}(\bar{ B}^{ 0})-->D^{ \pm} \pi^{ \mp} in the perterbative QCD approach based on k_T factorization, including the branching ratios and CP violation parameters which provide a clear way to extract the Cabibbo-Kobayashi-Maskawa angle \gamma. Our results of branching ratios of B_{ s}^{ 0}(\bar{ B}_{ s}^{ 0})-->D_{ s}^{ \pm} K^{ \mp} and B^{ 0}(\bar{ B}^{ 0})--> D^{ \pm} \pi^{ \mp} and the CP asymmetry of B^{ 0}(\bar{ B}^{ 0})--> D^{ \pm} \pi^{ \mp} agree well with the experimental data. We also give the predictions of the other observables, which provide some guidance for experiments in the future, especially for LHCb experiment.
Categories: hep-ph