${{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
S044.91
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{30}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ 45541
The following data is related to the above value:
$\Gamma({{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}})/\Gamma({{\mathit Z}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}})$
$\Gamma_{30}/\Gamma_{5}$