Phenomenological consequences of supersymmetry with anomaly induced masses

Tony Gherghetta, Gian F. Giudice, James D. Wells

Research output: Contribution to journalArticlepeer-review

336 Scopus citations


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 the anomaly induced contributions. In a well-defined minimal model we calculate electroweak symmetry breaking parameters, scalar masses, and the full one-loop splitting of the degenerate Wino states. The most distinctive features are gaugino masses proportional to the corresponding gauge coupling beta-functions, the possibility of a Wino as the lightest supersymmetric particle, mass degeneracy of sleptons, and a very massive gravitino. Unique signatures at high-energy colliders include dilepton and single lepton final states, accompanied by missing energy and displaced vertices. We also point out that this scenario has the cosmological advantage of ameliorating the gravitino problem. Finally, the primordial gravitino decay can produce a relic density of Wino particles close to the critical value.

Original languageEnglish (US)
Pages (from-to)27-47
Number of pages21
JournalNuclear Physics B
Issue number1-2
StatePublished - Oct 18 1999
Externally publishedYes

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