1998/06/21 by D. Elazzar Kaplan, David E. Kaplan, François Lepeintre +5
Physics and Astronomy · #Grand Unified Theory #Hidden sector #Massless particle #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Supersymmetry #Supersymmetry breaking #hep-ph
paper · pdf · doi:10.1103/physrevd.60.055003
published as Phys.Rev. D60 (1999) 055003 · LaTeX, 25 pages, 8 figures
arxiv created 1998/06/21 · openalex publication_date 1999/07/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We present a supersymmetric model of flavor. A single U(1) gauge group is responsible for both generating the flavor spectrum and communicating supersymmetry breaking to the visible sector. The problem of flavor changing neutral currents is overcome, in part using an ``effective supersymmetry'' spectrum among the squarks, with the first two generations very heavy. All masses are generated dynamically and the theory is completely renormalizable. The model contains a simple Froggatt-Nielsen sector and communicates supersymmetry breaking via gauge mediation without requiring a separate messenger sector. By forcing the theory to be consistent with SU(5) grand unification, the model predicts a large tan\ensuremathβ and a massless up quark. While respecting the experimental bounds on CP violation in the K system, the model leads to a large enhancement of CP violation in B\ensuremath-B mixing as well as in B decay amplitudes.