${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$   Decay Mode Summary INSPIRE   PDGID:
M189.4
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{3}$ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$ not seen 1192
The following data is related to the above value:
$\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$ $)$ ${\times }$ $\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{3}\Gamma_{1}/\Gamma$