Ultimate survival in anomalous psi(2S) decays

Abstract

The hierarchy among the radiative $\gamma$(${\pi }^0$, $\eta$, ${\eta }^{\prime }$) decay channels for the ${\psi }^{\prime }$ looks quite different from the $J/\psi$ one. The fate of charm, namely an ultimate survival of on-shell $c\bar{c}$ intermediate states, might give us the clue for this new puzzle in exclusive charmonium decays. A similar self-preservation has already been invoked in the past to solve the so-called $\rho \pi$ puzzle.

6 pages, 3 figures, 1 table

References in corpus (1)

• Study of electromagnetic decay of $J/\psi$ and ${\psi }^{\prime }$ to vector and pseudoscalar

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