Electric Dipole Moments in U(1)' Models
  We study electric dipole moments (EDM) of electron and proton in E(6)--inspired supersymmetric models with an extra U(1) invariance. Compared to the Minimal Supersymmetric Standard Model (MSSM), in addition to offering a natural solution to the mu problem and predicting a larger mass for the lightest Higgs boson, these models are found to yield suppressed EDMs. 
Alper Hayreter, Asli Sabanci, Levent Solmaz, Saime Solmaz