Effective Lagrangian Approach to the Fermion Mass Problem

Details Effective Lagrangian Approach to the Fermion Mass Problem Effective Lagrangian Approach to the Fermion Mass Problem

1993-09-21

arxiv.org/abs/hep-ph/9309300v1

Phys.Rev. D49 (1994) 4773-4779

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, UM-P-93/81, latex file, 1 figure available on request

Scientific paper

10.1103/PhysRevD.49.4773

An effective theory is proposed, combining the standard gauge group $SU(3)_{C}\otimes SU(2)_{L}\otimes U(1)_{Y}$ with a horizontal discrete symmetry. By assigning appropriate charges under this discrete symmetry to the various fermion fields and to (at least) two Higgs doublets, the broad spread of the fermion mass and mixing angle spectrum can be explained as a result of suppressed, non-renormalisable terms. A particular model is constructed which achieves the above while simultaneously suppressing neutral Higgs-induced flavour-changing processes.

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