2002/12/12 by K. Hamaguchi, Koichi Hamaguchi, M. Kakizaki +2 · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.68.056007
published as Phys.Rev. D68 (2003) 056007 · 22 pages, 2 figures
arxiv created 2002/12/12 · openalex publication_date 2003/09/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The democratic approach to account for fermion masses and mixing is known to be successful not only in the quark sector but also in the lepton sector. Here we extend this ansatz to supersymmetric standard models, in which the K"ahler potential obeys the underlying S3 flavor symmetries. The requirement of neutrino bi-large mixing angles constrains the form of the K"ahler potential for left-handed lepton multiplets. We find that right-handed sleptons can have nondegenerate masses and flavor mixing, while left-handed sleptons are argued to have universal and hence flavor-blind masses. This mass pattern is testable in future collider experiments when superparticle masses will be measured precisely. Lepton flavor violation arises in this scenario. In particular, \stackrel\ensuremath→\ensuremathμe\ensuremathγ is expected to be observed in a planned future experiment if supersymmetry breaking scale is close to the weak scale.