${{\boldsymbol \pi}^{0}}$ $\rightarrow$ ${{\boldsymbol e}^{+}}{{\boldsymbol e}^{+}}{{\boldsymbol e}^{-}}{{\boldsymbol e}^{-}}$ INSPIRE search

$\Gamma($ ${{\mathit \pi}^{0}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit e}^{-}}$ $)/\Gamma($ ${{\mathit \pi}^{0}}$ $\rightarrow$ 2 ${{\mathit \gamma}}$ $)$
$\Gamma_{4}/\Gamma_{1}$
S009R3