${{\boldsymbol \Upsilon}{(2S)}}$ $\rightarrow$ ${{\boldsymbol Z}_{{c}}{(3900)}^{+}}{{\boldsymbol Z}_{{c}}{(3900)}^{-}}$ INSPIRE search

$\Gamma($ ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit Z}_{{c}}{(3900)}^{+}}{{\mathit Z}_{{c}}{(3900)}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{26}/\Gamma$
M052R71