Probing a slepton Higgs on all frontiers

Abstract

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 $\mathcal{O}(10\text{TeV})$ 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 $10\text{ TeV}$.

33 pages, 5 figures; v2: added reference. Matches version published in JHEP