The ${\rm Y}(1S)$ $\to$ $B_c\rho$ decay with perturbative QCD approach

Abstract

With the potential prospects of the ${\rm Y}(1S)$ data samples at the running LHC and upcoming SuperKEKB, the ${\rm Y}(1S)$ $\to$ $B_c\rho$ weak decays are studied with the pQCD approach. It is found that (1) the lion's share of branching ratio comes from the longitudinal polarization helicity amplitudes; (2) branching ratio for the ${\rm Y}(1S)$ $\to$ $B_c\rho$ decay can reach up to $\mathcal{O}(10^{-9})$, which might be hopefully measurable.

Comments: 14 pages, revtex