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Motivated by the potential prospects of the $B_{c}^{\ast}$ meson samples athadron colliders, the bottom-changing $B_{c}^{\ast}$ ${\to}$ ${\psi}(1S,2S)P$,${\eta}_{c}(1S,2S)P$ weak decays are first studied with the perturbative QCDapproach, where $P$ $=$ ${\pi}$ and $K$. It is found that branching ratio ofthe CKM-favored $B_{c}^{\ast}$ ${\to}$ $J/{\psi}{\pi}$ decay is about ${\sim}$${\cal O}(10^{-8})$, which might be measurable at the future LHC experiments.

Study of $B_{c}^{\ast}$ ${\to}$ ${\psi}(1S,2S)P$, ${\eta}_{c}(1S,2S)P$ weak decays