${{\boldsymbol \psi}{(3770)}}$ $\rightarrow$ ${{\boldsymbol J / \psi}}{{\boldsymbol \eta}}$ INSPIRE search

$\Gamma($ ${{\mathit \psi}{(3770)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{6}/\Gamma$
M053R8