The minimal U (1)R-symmetric model revisited

Abstract

U (1)R-symmetric models of low energy supersymmetry, in which R-parity is extended to a continuous symmetry, make definitive experimental predictions in contrast to the standard supersymmetric model. We show that, contrary to previous claims, the minimal model is phenomenologically viable because large radiative corrections to the Higgs mass can invalidate the Higgs mass constraint on the parameters of the model. We incorporate these corrections and demonstrate that, unlike the standard supersymmetric light Higgs boson, which may be much heavier than the Z if the top quark mass is large, the light Higgs of our model will very likely accessible to LEP II. We also show that the sleptons should be within reach.