Reconciling High-Scale Left-Right Symmetry with Supersymmetry

We construct the minimal supersymmetric left-right theory and show that at the renormalizable level it requires the existence of an intermediate B-L breaking scale. The subsequent symmetry breaking down to the minimal supersymmetric standard model automatically preserves R symmetry. Furthermore, unlike in the nonsupersymmetric version of the theory, the see-saw mechanism takes its canonical form. The theory predicts the existence of a triplet of Higgs scalars much lighter than the B-L breaking scale.