Survival before annihilation in Psi-prime decays
(2005) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B628, p. 211-214 (2005)
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- (en) We extend the simple scenario for $\Psi'$ decays suggested a few years ago. The $c\bar c$ pair in the $\Psi'$ does not annihilate directly into three gluons but rather survives before annihilating. An interesting prediction is that a large fraction of all $\Psi'$ decays could originate from the $\Psi' \to \eta_{c} (3\pi)$ channel which we urge experimentalists to identify. Our model solves the problem of the apparent hadronic excess in $\Psi'$ decays as well as the $\rho\pi$ puzzle since, in our view, the two-body decays of the $\Psi'$ are naturally of electromagnetic origin. Further tests of this picture are proposed, e.g. $J/\Psi \to b_{1}\eta$. Comment: 6 pages, no figure
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Artoisenet, P., Gérard, J.-M., & Weyers, J. (2005). Survival before annihilation in Psi-prime decays. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B628, 211-214. https://doi.org/10.1016/j.physletb.2005.09.041 (Original work published 2005)