Study Pure Annihilation Decays B_s~0(B_s~0)→D~土π~干 in PQCD Approach

• 出 处: Communications in Theoretical Physics
• 发表日期: 2005年10期
• 关键词: branching meson quark poral normalized violation Belle adopt 功算 罗一

The rare decays B_s~0→Dπ and B_s~0→Dπ can occur only via annihilation-type diagrams in thestandard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoringsoft final state interaction. From our calculation, we find that their branching ratios are at(10~(-6)) with large CPasymmetry which may be measured in LHC-b experiment in the future.

The rare decays B_s ~ 0 → Dπ and B_s ~ 0 → Dπ can occur only via annihilation-type diagrams in the standard model. In this paper, we calculate branching ratios of these decays in perturbative QCD approach ignoringsoft final state interaction. we find that their branching ratios are at (10 ~ (-6)) with large CPasymmetry which may be measured in LHC-b experiments in the future.