The minima in cc PRD27,1527 (1983)

psi resonances: Prediction Experiment 3.41 GeV → J/psi(3100) J/psi(3097) 3.79 GeV → psi(3660), psi(3760) psi(3686), psi(3770) 4.17 GeV → psi(4040), psi(4140) psi(4040), psi(4160) 4.55 GeV → psi(4420), psi(4530) psi(4415), psi(?)