${{\mathit \eta}^{\,'}{(958)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M002.219
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{30}$ ${{\mathit \eta}^{\,'}{(958)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $<1.8 \times 10^{-6}$ CL= 90% 467
The following data is related to the above decay:
$\Gamma({{\mathit \eta}^{\,'}{(958)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{30}/\Gamma$