${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit n}}{{\overline{\mathit n}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.65
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{226}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit n}}{{\overline{\mathit n}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($4$ $\pm4$) $ \times 10^{-3}$ 1106
Category: Decays into stable hadrons
The following data is related to the above value:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit n}}{{\overline{\mathit n}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{226}/\Gamma$