Eur. Phys. J. A (2011) 47: 94
https://doi.org/10.1140/epja/i2011-11094-3

Regular Article - Theoretical Physics

Analysis of the decays ψ′ → J/ψπ ⁺ π ⁻ and η′_c → η _c π ⁺ π ⁻ with the heavy-quark symmetry

Department of Physics, North China Electric Power University, 071003, Baoding, P.R.C.

Received: 10 June 2011
Accepted: 18 July 2011
Published online: 11 August 2011

Abstract

In this article, we study the decays ψ′ → J/ψπ ⁺ π ⁻ and η′_c → 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 → 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.