c.c.}$ has been observed with a branching ratio of $(8.1 \pm 2.4 \pm 1.6) \times
10^{-5}$ which indicates the contribution of a significant one-virtual-photon contribution [@Suz; @fsi; @Suz01], and we shall not discuss it further.)

We summarize in Table III the total widths, branching ratios, and derived partial widths for $J/\psi$ and $\pp$ decays into $\rho \pi$ and $K^+
\overline{K}^*(892)^-$, as well as the partial widths predicted for the $\pp$ decays to these final states. Both hadronic and leptonic decay rates are proportional to the square of the wave function at the origin $|\Psi(0)|^2$. Although one might expect an additional factor of $1/M_V^2$, where $M_V$ is the mass of the decaying vector meson, entering into the leptonic width, we shall ignore this effect, since it is probably offset by a (form) factor suppressing the hadronic decay of the higher-mass $\pp$ into low-multiplicity final states such as $\rho \pi$. Then we expect for any hadronic final state $f$ [@rhopi; @Suz01; @FH] (f) = (J/f)   . This relation has been used to predict the quantities ${\Gamma_{\rm pred}}$ in Table III. One sees that $\pp \to \rho \pi$ is suppressed by a factor of at least $\sim 50$ with respect to naïve expectations, 