Classification of new particles

A classification of the new particles is proposed. Hadrons are constructed from quarks corresponding to several different representations of an S${\mathrm{U}}_3$ color group, with confined color. The new family of resonances, related to $\frac{\psi }{J}$, is assigned to color-antisextet quarks $Q$. These new quarks $Q$ do not form mixed mesons $\overline{q}Q$ with old antiquarks but can form mixed baryons $\mathrm{Qqq}$. We speculate on the relation between color and mass. High-mass recurrences of the $\frac{\psi }{J}$ family are expected to have associated large changes in the cross section for electron-positron annihilation ($\Delta R>\mathrm{}4\mathrm{}$). A conjectured mass formula, which relates the masses of $\frac{\psi }{J}$ and $\omega$, predicts the masses of possible recurrences of the $\frac{\psi }{J}$ particle. Other experimental implications at presently available energies are discussed, especially the necessity for an isovector partner for $\frac{\psi }{J}$, and for pseudoscalar mesons at 1.8-2.2 GeV, some of which can decay into two photons.