Sparticle masses from the superconformal anomaly

Alex Pomarol, Riccardo Rattazzi

Research output: Contribution to journalArticleResearchpeer-review

211 Citations (Scopus)

Abstract

We discuss a recently proposed scenario where the sparticle masses are purely mediated by gravity through the superconformal anomaly. This scenario elegantly evades the supersymmetric flavor problem since soft masses, like the anomaly, are not directly sensitive to ultraviolet physics. However, its minimal incarnation fails by predicting tachyonic sleptons. We study the conditions for decoupling of heavy threshold effects and how these conditions are evaded. We use these results to build a realistic class of models where the non-decoupling effects of ultra-heavy vectorlike matter fields eliminate the tachyons. These models have a flavor invariant superspectrum similar to that of gauge mediated models. They, however, differ in several aspects: the gaugino masses are not unified, the colored sparticles are not much heavier than the others, the μ problem is less severe and the gravitino mass is well above the weak scale, m3/2 ≳ 10 TeV. We also show that in models where an R-symmetry can be gauged, the associated D-term gives rise to soft terms that are similarly insensitive to the ultraviolet.
Original languageEnglish
JournalJournal of High Energy Physics
Volume3
Issue number5
Publication statusPublished - 1 Dec 1999

Keywords

  • Supergravity Models
  • Supersymmetric Standard Model
  • Supersymmetry Breaking

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