${\rm Y}(nS)$ $\to$ $B_c^{\ast }D$ decays with perturbative QCD approach

Abstract

The ${\rm Y}(nS)$ $\to$ $B_c^{\ast }D$ weak decays ($n$ $=$ $1$, $2$, $3$) are investigated with perturbative QCD approach. It is found that the CKM-favored ${\rm Y}(nS)$ $\to$ $B_c^{\ast }{D}_s$ decays have branching ratio of $\mathcal{O}(10^{-10})$, which might be potentially accessible to the future LHC and SuperKEKB experiments.

Comments: 18 pages, 3 figures, revtex