Study of Bc --> J/psi pi, etac pi decays with perturbative QCD approach

TL;DR

This paper investigates Bc meson decays into J/psi pi and etac pi using perturbative QCD, highlighting the sensitivity of form factors and branching ratios to various parameters, and suggesting these decays are promising for collider measurements.

Contribution

It applies the perturbative QCD approach to analyze Bc decays, emphasizing parameter sensitivities and proposing these channels for experimental study.

Findings

Form factors and branching ratios are sensitive to wave function parameters and decay constants.

Large branching ratios suggest these decays are promising for collider experiments.

Clear signals of the decay modes facilitate potential measurements at hadron colliders.

Abstract

The Bc --> J/psi pi, etac pi decays are studied with the perturbative QCD approach. It is found that form factors and branching ratios are sensitive to the parameters w, v, f_J/psi and f_etac, where w and v are the parameters of the charmonium wave functions for Coulomb potential and harmonic oscillator potential, respectively, f_J/psi and f_etac are the decay constants of the J/psi and etac mesons, respectively. The large branching ratios and the clear signals of the final states make the Bc --> J/psi pi, etac pi decays to be the prospective channels for measurements at the hadron colliders