Survival before annihilation in Psi-prime decays

Abstract

We extend the simple scenario for ${\Psi }^{\prime }$ decays suggested a few years ago. The $c\bar{c}$ pair in the ${\Psi }^{\prime }$ does not annihilate directly into three gluons but rather survives before annihilating. An interesting prediction is that a large fraction of all ${\Psi }^{\prime }$ decays could originate from the ${\Psi }^{\prime }\to {\eta }_c(3\pi )$ channel which we urge experimentalists to identify. Our model solves the problem of the apparent hadronic excess in ${\Psi }^{\prime }$ decays as well as the $\rho \pi$ puzzle since, in our view, the two-body decays of the ${\Psi }^{\prime }$ are naturally of electromagnetic origin. Further tests of this picture are proposed, e.g. $J/\Psi \to b_1\eta$.

6 pages, no figure

References in corpus (5)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Observation of 1^-0^- Final States from psi(2S) Decays and e^+e^- Annihilation
• Measurement of the final states $\omega {\pi }^0$, $\rho \eta$, and $\rho {\eta }^{{}^{\prime }}$ from $\psip$ electromagnetic decays and $\ee$ annihilations
• Observation of the decay $\psip\rar\kstark$
• Measurements of $\psi (2S)$ decays into $\varphi {\pi }^0$, $\varphi \eta$, $\varphi {\eta }^{{}^{\prime }}$, $\omega \eta$, and $\omega {\eta }^{{}^{\prime }}$

Cited by in corpus (3)

• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Study of electromagnetic decay of $J/\psi$ and ${\psi }^{\prime }$ to vector and pseudoscalar
• Ultimate survival in anomalous psi(2S) decays