Probing a slepton Higgs on all frontiers

We study several aspects of supersymmetric models with a u(1) r symmetry where the higgs doublet is identified with the superpartner of a lepton. we derive new, stronger bounds on the gaugino masses based on current measurements, and also propose ways to probe the model up to scales of $$ mathcal{o} $$ (10 tev) at future e + e − colliders. since the u(1) r symmetry cannot be exact, we analyze the effects of r-symmetry breaking on neutrino masses and proton decay. in particular, we find that getting the neutrino mixing angles to agree with experiments in a minimal model requires a uv cutoff for the theory at around 10 tev.