${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}{(1405)}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.475
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{370}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}{(1405)}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ ($2.04$ $\pm0.22$) $ \times 10^{-7}$
Category: Dalitz decays
The following data is related to the above value:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}{(1405)}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{370}/\Gamma$