${{\mathit \psi}{(3770)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$  Decay Mode Summary INSPIRE   PDGID:
M053.47
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{7}$ ${{\mathit \psi}{(3770)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$ ($8.7$ $\pm1.2$) $ \times 10^{-4}$ 361
The following data is related to the above value:
$\Gamma($ ${{\mathit \psi}{(3770)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{7}/\Gamma$