Radiative corrections to the background of $\mu\to e\gamma$ decay
  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. 
A.B. Arbuzov (JINR, Dubna), O. Krehl (IKF, Juelich), E.A. Kuraev, E.N.   Magar, B.G. Shaikhatdenov (JINR, Dubna)