Recent preliminary evidence for a $D \bar{ D}$ state $\chi(3.86)$ raises extremely interesting implications for theoretical models, particularly those currently in vogue, e.g. the flux tube model and a molecular charmonium picture. We examine the experimental consequences as well as the possible unveiling of a strata of C-exotic states in heavy quarkonia systems by future facilities like BES Upgrade/Tau-Charm Factory and CLEO III/B-Factories.
Categories: hep-ph