1996/08/06 by Otto C. W. Kong · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.55.383
published as Phys.Rev. D55 (1997) 383-396 · 43 pages RevTex, including 9 tables and 3 figures
arxiv created 1996/08/06 · openalex publication_date 1997/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We give a detailed description of the model construction procedures about our new approach to the family structure of the standard model. SM-like chiral fermion spectra, largely ``derivable'' from the gauge anomaly constraints, are formulated in an SU(N)\ensuremath\bigotimesSU(3)\ensuremath\bigotimesSU(2)\ensuremath\bigotimesU(1) symmetry framework as an extension of the SM symmetry. The N=4 case gives naturally three families as a result, with U(1)Y nontrivially embedded into the SU(4)A\ensuremath\bigotimesU(1)X. Such a spectrum has extra vectorlike quarks and leptons. We illustrate how an acceptable symmetry-breaking pattern can be obtained through a relatively simple scalar sector which gives naturally hierarchical quark mass matrices. Compatibility with various FCNC constraints and some interesting aspects of the possible phenomenological features are discussed, from a non-model-specific perspective. The question of incorporating supersymmetry without putting in the Higgs bosons as extra supermultiplets is also addressed.