${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything  Decay Mode Summary INSPIRE   PDGID:
M047.2
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{10}$ ${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything $<1.9 \times 10^{-4}$ CL= 95%
The following data is related to the above value:
$\Gamma($ ${{\mathit \Upsilon}{(4S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)/\Gamma_{\text{total}}$
$\Gamma_{10}/\Gamma$