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arXiv · 1312.3081

Ultimate survival in anomalous psi(2S) decays

J. M. Gerard·A. Martini
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Abstract

The hierarchy among the radiative $γ$($π^0$, $η$, $η^{\prime}$) decay channels for the $ψ^{\prime}$ looks quite different from the $J/ψ$ 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 $ρπ$ puzzle.

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J. M. Gerard, A. Martini. 2013-12-11. Ultimate survival in anomalous psi(2S) decays. https://doi.org/10.1016/j.physletb.2014.01.068

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