${{\mathit \mu}^{-}}$ $\rightarrow$ ${{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}{{\mathit \nu}_{{{\mu}}}}{{\mathit \gamma}}$  Decay Mode Summary INSPIRE   PDGID:
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
$\Gamma_{2}$ ${{\mathit \mu}^{-}}$ $\rightarrow$ ${{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}{{\mathit \nu}_{{{\mu}}}}{{\mathit \gamma}}$ ($6.0$ $\pm0.5$) $ \times 10^{-8}$ 53
Note: This only includes events with energy of ${{\mathit e}}>$ 45 MeV and energy of ${{\mathit \gamma}}>$ 40 MeV. Since the ${{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}{{\mathit \nu}_{{{\mu}}}}$ and ${{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}{{\mathit \nu}_{{{\mu}}}}{{\mathit \gamma}}$ modes cannot be clearly separated, we regard the latter mode as a subset of the former.
The following data is related to the above value: