${{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible  Decay Mode Summary INSPIRE   PDGID:
M004.260
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{32}$ ${{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible $<1.7 \times 10^{-4}$ CL= 90%
The following data is related to the above value:
$\Gamma($ ${{\mathit \phi}{(1020)}}$ $\rightarrow$ invisible$)/\Gamma($ ${{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $)$
$\Gamma_{32}/\Gamma_{1}$