${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit f}_{{{2}}}{(2340)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$  Decay Mode Summary INSPIRE   JSON PDGID:
M070.270
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{368}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit f}_{{{2}}}{(2340)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$ ($5.6$ ${}^{+2.4}_{-2.2}$) $ \times 10^{-5}$
Category: Radiative decays
The following data is related to the above decay:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit f}_{{{2}}}{(2340)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{368}/\Gamma$