# Study of ${\Upsilon}(nS)$ ${\to}$ $B_{c}P$ decays with perturbative QCD approach

## TL;DR

This paper investigates the weak decay processes of the upsilon meson into Bc mesons and pions using perturbative QCD, predicting measurable branching ratios for future high-luminosity experiments.

## Contribution

It provides the first perturbative QCD calculation of ${}Upsilon(nS)$ decays into $B_c$ and light mesons, estimating their branching ratios for the first time.

## Key findings

- Branching ratios for ${}Upsilon(nS) o B_c \pi$ are around 10^{-11}.
- Predicted decay rates are within reach of future experimental detection.
- Supports potential observation of these rare decays in upcoming experiments.

## Abstract

With the potential prospects of the ${\Upsilon}(nS)$ at high-luminosity dedicated heavy-flavor factories, the color-favored ${\Upsilon}(nS)$ ${\to}$ $B_{c}{\pi}$, $B_{c}K$ weak decays are studied with the pQCD approach. It is found that branching ratios for the ${\Upsilon}(nS)$ ${\to}$ $B_{c}{\pi}$ decay are as large as the order of ${\cal O}(10^{-11})$, which might be measured promisingly by the future experiments.