It has recently been shown that in supersymmetric left-right models with automatic R-parity conservation, the theory below the $W_R$ scale is given by the MSSM with massive neutrinos and a pair of doubly charged superfields with masses in the 100 GeV range [with or without an extra pair of heavy Higgs doublets $(M>~10\hspace{0.5em}\mathrm{TeV})$ depending on the model]. In this paper we study the unification prospects for such theories and their phenomenological implications for collider experiments. We study two versions of the theory: one with supersymmetry breaking transmitted via the gauge and another where the same occurs via gravitational forces. We point out that looking at multi $\tau$ final states can considerably constrain the parameter space of the model.

• Received 17 April 1998

DOI:https://doi.org/10.1103/PhysRevD.59.015018