${{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ X  Decay Mode Summary INSPIRE   PDGID:
S044.23
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{26}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ X ($3.51$ ${}^{+0.23}_{-0.25}$) $ \times 10^{-3}$ S=1.1 
The following data is related to the above value: