${{\boldsymbol \psi}{(4260)}}$ $\rightarrow$ ${{\boldsymbol J / \psi}}{{\boldsymbol \eta}^{\,'}}$ INSPIRE search

$\Gamma($ ${{\mathit \psi}{(4260)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}^{\,'}}$ $)$ ${\times }\Gamma($ ${{\mathit \psi}{(4260)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{10}\Gamma_{1}/\Gamma$
M074R34