Phenomenological consequences of supersymmetry with anomaly induced masses

In the supersymmetric standard model there exist pure gravity contributions to the soft mass parameters which arise via the superconformal anomaly. We consider the low-energy phenomenology with a mass spectrum dominated by th e anomaly induced contributions. In a well-defined minimal model we calcula te electroweak symmetry breaking parameters, scalar masses, and the full on e-loop splitting of the degenerate Wino states. The most distinctive featur es are gaugino masses proportional to the corresponding gauge coupling beta functions, the possibility of a Wine as the lightest supersymmetric partic le, mass degeneracy of sleptons, and a very massive gravitino. Unique signa tures at high-energy colliders include dilepton and single lepton final sta tes, accompanied by missing energy and displaced vertices. We also point ou t that this scenario has the cosmological advantage of ameliorating the gra vitino problem. Finally, the primordial gravitino decay can produce a relic density of Wine particles close to the critical value. (C) 1999 Elsevier S cience B.V. All rights reserved.