$B^{\ast }$ $\to$ $\bar{D}D$ decays with perturbative QCD approach

Abstract

The nonleptonic two-body $B^{\ast }$ $\to$ $\bar{D}D$ weak decays are studied phenomenologically with the perturbative QCD factorization approach. It is found that the $B_s^{\ast 0}$ $\to$ $D_s^{-}{D}_s^{+}$, $B_d^{\ast 0}$ $\to$ $D_d^{-}{D}_s^{+}$, and $B_u^{\ast +}$ $\to$ ${\bar{D}}_u^0{D}_s^{+}$ decays have branching ratios $\gtrsim$ $10^{-9}$, and might be promisingly measurable at the running LHC and forthcoming SuperKEKB experiments in the future.

22 pages, 2 figures