2002/11/30 by G.G. Ross, G. G. Ross, O. Vives · 65 citations
Physics and Astronomy · #CP violation #Dark Matter and Cosmic Phenomena #Neutrino #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #Supergravity #Supersymmetry #Supersymmetry breaking #Symmetry breaking #Yukawa potential #hep-ph
paper · pdf · doi:10.1103/physrevd.67.095013
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 67(9) (American Physical Society) · Final version to appear in PRD. Improved discusion of several points, updated references, typos corrected
arxiv created 2003/04/03 · openalex publication_date 2003/05/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The hierarchical structure of fermion masses and mixings strongly suggests an underlying family symmetry. In supergravity any familon field spontaneously breaking this symmetry necessarily acquires an F term which contributes to the soft trilinear couplings. We show that, as a result, \stackrel\ensuremath→\ensuremathμe\ensuremathγ decay can receive large contributions from this source at the level of current experimental bounds, and thus this channel may provide the first indication of supersymmetry and a clue to the structure of the soft breaking sector. Using the mercury electric dipole moment bounds, we find strong bounds on the right handed down quark mixing angles that are inconsistent with models relating them to neutrino mixing angles and favor a near-symmetric form for the magnitude of the down quark mass matrix.