${\rm Y}(1S)$ $\to$ $B_c\pi$, $B_{c}K$ decays with perturbative QCD approach

Abstract

With the potential prospects of the ${\rm Y}(1S)$ at high-luminosity dedicated heavy-flavor factories, the bottom-changing ${\rm Y}(1S)$ $\to$ $B_c\pi$, $B_{c}K$ weak decays are studied with the pQCD approach. It is found that branching ratio for the color-favored and CKM-favored ${\rm Y}(1S)$ $\to$ $B_c\pi$ decay can reach up to $\mathcal{O}(10^{-11})$. So the ${\rm Y}(1S)$ $\to$ $B_c\pi$ decay might be measured promisingly by the future experiments.

Comments: 13 pages