${{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit U}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit e}^{+}}{{\mathit e}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M004.259
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{30}$ ${{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit U}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ $<1 \times 10^{-6}$ CL= 90%
The following data is related to the above value:
$\Gamma({{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit U}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{30}/\Gamma$