Charged lepton and down-type quark masses in SU(1,1) model and the structure of higgs sector

Details Charged lepton and down-type quark masses in SU(1,1) model and the structure of higgs sector Charged lepton and down-type quark masses in SU(1,1) model and the structure of higgs sector

2007-12-18

arxiv.org/abs/0712.2938v2

Prog.Theor.Phys.119:775-796, 2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, no figures

Scientific paper

10.1143/PTP.119.775

The simplest noncompact group SU(1,1),when introduced as a symmetry group of the generations of quarks and leptons in the framework of a vector-like theory, gives an excellent viewpoint on low energy physics. The minimal setup of the scheme, however, gives phenomenologically unacceptable prediction on the Yukawa coupling matrices. This suggests the higgs sector has richer structure than we expect from the success of MSSM. The natural extension of the scheme, which has doubled structure in the higgs sector, is formulated. The framework admits this extension in a restrictive way. The possible patterns of Yukawa couplings are classified and the expressions of the coupling matrices are presented.

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