${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \eta}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.340
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{200}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \eta}}$ ($1.45$ $\pm0.33$) $ \times 10^{-3}$ 1328
Category: Decays into stable hadrons
The following data is related to the above value:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \eta}})$ ${\times }$ $\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{200}\Gamma_{5}/\Gamma$