$\tau -\mu -e$ Universality in $\tau$ Decays and Constraints on the Slepton Masses

Abstract

The leptonic $\tau$ decays are calculated at the 1-loop level in the Minimal Supersymmetric Standard Model. The deviation from the $\tau -\mu -e$ universality is studied as a function of the supersymmetric parameters and discussed in the context of the expected improvement of the experimental accuracy.

Comments: 10 pages, standard LaTeX, report DFPD 94/TH-27,MPI-Ph/94-24,DESY 94-077. 5 figures can be obtained via conventional mail from P. Chankowski upon request