${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \eta}_{{{c}}}}$ INSPIRE search

$\Gamma($ ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \eta}_{{{c}}}})/\Gamma_{\text{total}}$
$\Gamma_{19}/\Gamma$
M052R60