On the relations between two-photon and leptonic widths of low-lying S-wave states of charmonium

S. B. Gerasimov, M. Majewski

The relation between the ratio Gamma_{ee}(psi')/Gamma_{ee}(J/psi) and Gamma_{2gamma}(eta_{c}')/Gamma_{2gamma}(eta_{c}), expressed in terms of the configuration mixing amplitudes in…