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
@article{arxiv.0808.3619,
title = {Study of Bc --> J/psi pi, etac pi decays with perturbative QCD approach},
author = {Jun-Feng Sun and Dong-Sheng Du and Yue-Ling Yang},
journal= {arXiv preprint arXiv:0808.3619},
year = {2009}
}