Muon Number Violating Processes in Single Particle Extensions of the Standard Model

Abstract

We study the one-loop induced muon number processes when the standard model is minimally extended to include a $\mathrm{SU}(2)$ singlet of a charged scalar $h^{+}$ and a neutral fermion $N$. We find that $\mu \to e\gamma$ is more sensitive for the former model whereas $\mu -e$ conversion in nuclei for the latter. Effects of a scalar leptoquark $y^{1/3}$ and a heavy vector fermion $E^{-}$, which induce tree level rare muon decays, are also discussed.

Comments: TRI-PP-94-18. (the figure is not included)