Paper detail

Analysis of the decays $ψ^{\prime}\to {J/ψ}π^+π^-$ and $η_c^{\prime}\to {η_c}π^+π^-$ with the heavy quark symmetry

In this article, we study the decays $ψ^{\prime}\to {J/ψ}π^+π^-$ and $η_c^{\prime}\to {η_c}π^+π^-$ by taking into account the chiral symmetry breaking effects, the final-state interactions and the heavy quark symmetry. We can confront the predictions of the $η_c^{\prime}\to η_c π^+π^-$ decay width and differential decay width with the experimental data in the future, and obtain powerful constraints on the chiral breaking effects and the final-state interactions, and test the heavy quark symmetry.