${{\mathit \psi}{(2S)}}$ $\rightarrow$ invisible  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M071.275
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{231}$ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ invisible $<0.016$ CL= 90%
Category: Other decays
The following data is related to the above value:
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ invisible$)/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})$
$\Gamma_{231}/\Gamma_{7}$