Flavorful hybrid anomaly-gravity mediation

Abstract

We consider supersymmetric models where anomaly and gravity mediation give comparable contributions to the soft terms and discuss how this can be realized in a five-dimensional brane world. The gaugino mass pattern of anomaly mediation is preserved in such a hybrid setup. The flavorful gravity-mediated contribution cures the tachyonic slepton problem of anomaly mediation. The supersymmetric flavor puzzle is solved by alignment. We explicitly show how a working flavor-tachyon link can be realized with Abelian flavor symmetries and give the characteristic signatures of the framework, including O(1) slepton mass splittings between different generations and between doublets and singlets. This provides opportunities for same flavor dilepton edge measurements with missing energy at the Large Hadron Collider (LHC). Rare lepton decay rates could be close to their current experimental limit. Compared to pure gravity mediation, the hybrid model is advantageous because it features a heavy gravitino which can avoid the cosmological gravitino problem of gravity-mediated models combined with leptogenesis.

8 pages, 1 figure; v2: minor modifications to Sect. II, references added, conclusions unchanged

References in corpus (9)

• Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor Playground
• Solving the flavour problem with hierarchical fermion wave functions
• The Standard Model and Supersymmetric Flavor Puzzles at the Large Hadron Collider
• Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking
• Flavorful Supersymmetry
• Flavour in supersymmetry: horizontal symmetries or wave function renormalisation
• Interplay of LFV and slepton mass splittings at the LHC as a probe of the SUSY seesaw
• A large Muon Electric Dipole Moment from Flavor?
• Seesaw Extended MSSM and Anomaly Mediation without Tachyonic Sleptons