The hadronic decay of radially and orbitally excited charmonium above charm
threshold by 3P0 pair creation and chromoelectric flux--tube breaking is
discussed in an harmonic oscillator approximation. We find independent evidence
from a study of widths for a 2S admixture in the predominantly 1D state
ψ(3770), and explore the possibility of metastable radially excited 2 \;
^{3}P_{0,1,2} states being a source of the anomalously large production of
ψ′ at the Tevatron. At least one of them is expected to be narrow as a
consequence of the existence of nodes in the radial wave function.Comment: 18 pages, LaTeX, 5 tables, 3 postscript figures, with minor
alterations and improved cross-referencin