${{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M004.260
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{31}$ ${{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible $<1.7 \times 10^{-4}$ CL= 90%
The following data is related to the above value:
$\Gamma({{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible$)/\Gamma({{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}})$
$\Gamma_{31}/\Gamma_{1}$