Slepton Non-Universality in the Flavor-Effective MSSM

Abstract

Supersymmetric theories supplemented by an underlying flavor-symmetry ${\mathcal{G}}_f$ provide a rich playground for model building aimed at explaining the flavor structure of the Standard Model. In the case where supersymmetry breaking is mediated by gravity, the soft-breaking Lagrangian typically exhibits large tree-level flavor violating effects, even if it stems from an ultraviolet flavor-conserving origin. Building on previous work, we continue our phenomenological analysis of these models with a particular emphasis on leptonic flavor observables. We consider three representative models which aim to explain the flavor structure of the lepton sector, with symmetry groups ${\mathcal{G}}_f=\Delta (27)$, $A_4,$ and $S_3$.

Comments: References added, minor typos corrected. 28 pages, 8 figures