${{\mathit \Upsilon}{(1S)}}$ $\rightarrow$ invisible  Decay Mode Summary INSPIRE   PDGID:
M049.106
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{133}$ ${{\mathit \Upsilon}{(1S)}}$ $\rightarrow$ invisible $<3.0 \times 10^{-4}$ CL= 90%
Category: Other decays
The following data is related to the above value:
$\Gamma($ ${{\mathit \Upsilon}{(1S)}}$ $\rightarrow$ invisible$)/\Gamma_{\text{total}}$
$\Gamma_{133}/\Gamma$