${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit \eta}^{\,'}{(958)}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.59
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{221}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit \eta}^{\,'}{(958)}}$ ($1.29$ $\pm0.14$) $ \times 10^{-4}$ S=2.0  596
Category: Decays into stable hadrons
The following data is related to the above value: