${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit g}}{{\mathit g}}$  Decay Mode Summary INSPIRE   PDGID:
M070.250
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{4}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit g}}{{\mathit g}}$ ($8.8$ $\pm1.1$) $ \times 10^{-2}$
The following data is related to the above value:
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