${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit K}^{+}}{{\mathit K}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.455
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{22}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ ($8.6$ $\pm3.0$) $ \times 10^{-4}$ 1331
Category: Decays involving hadronic resonances
The following data is related to the above value:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit K}^{+}}{{\mathit K}^{-}})$ ${\times }$ $\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{22}\Gamma_{5}/\Gamma$