${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ 2 ( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}}$  Decay Mode Summary INSPIRE   PDGID:
M070.201
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{171}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ 2 ( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}}$ ($2.29$ $\pm0.28$) $ \times 10^{-3}$ 1446
Category: Decays into stable hadrons
The following data is related to the above value:
 ▸ expand all datablocks
$\Gamma($ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{171}/\Gamma$
$\Gamma($ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ 2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \eta}})$ ${\times }$ $\Gamma($ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{171}\Gamma_{5}/\Gamma$