Physical Implications of a Vector-like Extension of the Standard Model

Details Physical Implications of a Vector-like Extension of the Standard Model Physical Implications of a Vector-like Extension of the Standard Model

1996-04-19

arxiv.org/abs/hep-ph/9604358v2

J.KoreanPhys.Soc.29:S247-S250,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

Some references are added. 5 pages. Talk presented at KOSEF-JSPS Winter School on Recent Developments in Particle and Nuclear

Scientific paper

Physical implications of a vector-like extension of the standard model for heavier quarks and leptons with $SU(2)\times U(1)$ gauge symmetry and only one Higgs doublet are discussed. This scheme incorporates infinitely many fermions, and the chiral structure is realized by a non-vanishing analytic index of mass matrices. The model is perturbatively well controllable, and the physical Higgs particle generally mediates leptonic as well as quark flavor-changing processes at a rate below the present experimental limit. This model illustrates a general feature of models where some of the fermion masses are of non-Higgs origin.

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