${{\boldsymbol Z}}$ $\rightarrow$ ${{\boldsymbol J / \psi}{(1S)}}{{\boldsymbol J / \psi}{(1S)}}$ INSPIRE search

$\Gamma($ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit J / \psi}{(1S)}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{31}/\Gamma$
S044R38