Radiative corrections to the background of $\mu \to e\gamma$ decay

Abstract

Radiative muon decay in the kinematics similar to the neutrinoless decay $\mu \to e\gamma$ is considered. Radiative corrections due to 1-loop virtual photons and emission of additional soft or hard photons are taken into account. Analytical expressions and numerical estimations are presented.

11 pages, LaTeX, misprints in Eqs.(9,12,14) fixed