General Structure of Democratic Mass Matrix of Lepton Sector in E 6 Model

An extension of the Standard Model (SM) fermion sector, which is inspired by the E 6 Grand Unified Theory (GUT) model, might be a good candidate to explain a number of unanswered questions in SM. Existence of the E 6 leptons might explain great mass difference of charged and neutral leptons. Also, democracy on mass matrix elements is a natural approach in SM. In this study, we have given general structure of Democratic Mass Matrix (DMM) of lepton sector in E 6 model.