Supersymmetry without R-parity : Leptonic Phenomenology

R-parity conservation is an {\it ad hoc} assumption in the most popular version of the supersymmetric standard model. Most studies of models which do allow for R-parity violation have been restricted to various limiting scenarios. In this paper we illustrate how the single-VEV parametrization provides a workable framework to analyze phenomenology of the most general theory of SUSY without R-parity. We report on a comprehensive study of various aspects of the resulting leptonic phenomenology at tree-level. Experimental constraints on various processes involved are then combined to find regions of admissible parameter space. In particular, we show that large R-parity violation is not ruled out, especially for large $\tan\beta$.