${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ ${+}$ ( ${{\mathit J / \psi}}$ , ${{\mathit \eta}_{{c}}}$) ${{\mathit K}_S^0}$   Decay Mode Summary INSPIRE   PDGID:
M047.15
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{5}$ ${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ ${+}$ ( ${{\mathit J / \psi}}$ , ${{\mathit \eta}_{{c}}}$) ${{\mathit K}_S^0}$ $<4 \times 10^{-7}$ CL= 90%
The following data is related to the above value:
$\Gamma($ ${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ ${+}$ ( ${{\mathit J / \psi}}$ , ${{\mathit \eta}_{{c}}}$) ${{\mathit K}_S^0}$ $)/\Gamma_{\text{total}}$
$\Gamma_{5}/\Gamma$