Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-02-07
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 1 figure, need psfig.sty
Scientific paper
The generation structure in the quark and lepton spectrum is explained as originating from the excitation spectrum S_n of SU(2)_W doublet scalar fields, whose ground state S_1 is the Standard Model Higgs field. There is only one basic family of SU(2)_W doublet left-handed fermions, nu_L, e_L, u_L, d_L, whose bound states with S_n manifest themselves as the generations of left-handed quarks and leptons. Likewise, there is only one basic family of the right-handed fermions, nu_R, e_R, u_R, d_R, which combine with the gauge invariant scalar fields G_n to produce the right-handed quarks and leptons of the second and higher generations. There are only four Yukawa coupling constants, G_nu, G_e, G_u, and G_d, and all quark and lepton masses are proportional to them. Suppression of flavor changing neutral currents (GIM mechanism) is automatic. nu_mu and nu_tau are expected to be massive.
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