${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ virtual ${{\mathit \gamma}}$ $\rightarrow$ hadrons  Decay Mode Summary INSPIRE   PDGID:
M070.4
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{2}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ virtual ${{\mathit \gamma}}$ $\rightarrow$ hadrons ($13.46$ $\pm0.07$) $ \times 10^{-2}$
The following data is related to the above value: