Information Obtainable on Polarization ofμ+and Asymmetry ofe+in Muonium Experiments

The formation of the compound ${\mu }^{+}+e^{-}$ (muonium) is considered as a tool for gaining information regarding the polarization of the ${\mu }^{+}$ before their capture by the $e^{-}$ and the asymmetry of $e^{+}$ emission in the disintegration ${\mu }^{+}\to e^{+}+\nu +{\nu }^{\prime }$. The detection of asymmetry effects is supposed to take place through the counting of $e^{+}$. The effect of constant magnetic fields and of microwave-induced transitions among magnetic substates of muonium is calculated, with the conclusion that all of the experiments considered here determine in different ways the same combination of parameters describing the initial muon polarization and the asymmetry of $e^{+}$ emission in muon decay.