The naive quartet quark model and the psi's

The naive quartet quark model approach to the psi-particle is developed. Narrow decay widths of the psi's are explained on the basis of the Okubo-Zweig-Iizuka rule. SU(4) mass formula results in a scaling relation deltasub(psi phi)=f(delta sub(psiω)). Small delta sub(psiω) required by the narrow width of psi(3.1) is consistent with the mass formula. The relatively large GAMMA(psi(3.7)→psi(3.1)+2π) is a result of large anti Q Q epsilon-coupling which also explains the dominance of rho+2π decay mode of rho'(1.6) decay. The breaking of the O-Z-I rule through epsilon is about 8% in amplitude. No sensible difference between two assignments for psi(3.7) (orbital and radial excitations) is found. (auth.)