We construct the truly minimal left-right symmetric model by utilizing only the fields dictated by supersymmetry and automatic R-parity conservation. Allowing for non-renormalizable operators in the superpotential, we show that parity can be spontaneously broken while preserving electromagnetic gauge invariance. The scale of parity breakdown is predicted in the intermediate region: $M_R > 10^{ 10}- 10^{ 11} GeV$, and R-parity remains exact. The theory contains a number of charged and doubly charged Higgs scalars with a low mass of order $M_R^2/M_{ Planck}$, accessible to experiment.
Categories: hep-ph