${{\boldsymbol Z}}$ $\rightarrow$ ${{\boldsymbol \eta}}{{\boldsymbol \gamma}}$ INSPIRE search

$\Gamma($ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \gamma}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{15}/\Gamma$
S044R14