摘要
Using the relativistic Bethe-Salpeter method, the electron energy spectrum and the semileptonic decay widths of B^0 → Ds^- e+ve and B^0 → Ds^*-e+ve are calculated. We obtain a large branching fraction Br(Bs → Dseve) = (2.85 ± 0.35)% and Br(Bs→ D^*s eue) = (7.09 ±0.88)%, which can be easily detected in future experiments.
Using the relativistic Bethe-Salpeter method, the electron energy spectrum and the semileptonic decay widths of B^0 → Ds^- e+ve and B^0 → Ds^*-e+ve are calculated. We obtain a large branching fraction Br(Bs → Dseve) = (2.85 ± 0.35)% and Br(Bs→ D^*s eue) = (7.09 ±0.88)%, which can be easily detected in future experiments.
基金
Supported by the National Natural Science Foundation of China under Grant No 10875032, and in part by SRF for ROCS, SEM.