Intrinsic Charm of Vector Mesons: A Possible Solution of the “ρπPuzzle''

An outstanding mystery of charmonium physics is why the $J/\psi$ decays prominently to pseudoscalar plus vector meson channels, such as $J/\psi \to \rho \pi$ and $J/\psi \to K^{*}K$, whereas the ${\psi }^{\prime }\left(2S\right)$ does not. We show that such decays of $J/\psi$ and their suppression for ${\psi }^{\prime }\left(2S\right)$ follow naturally from the existence of intrinsic charm $|\overline{q}q\overline{c}c〉$ Fock components of the light vector mesons.