Supersymmetry without R parity: Constraints from leptonic phenomenology

R-parity conservation is an 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. The single-VEV parametrization used in this paper provides a workable framework to analyze phenomenology of the most general theory of SUSY without R parity. We perform a comprehensive study of leptonic phenomenology at the tree level. Experimental constraints on various processes are studied individually and then combined to yield regions of admissible parameter space. In particular, we show that large R-parity violating bilinear couplings are not ruled out, especially for large tan {beta}. (c) 2000 The American Physical Society.