A_4 model for the quark mass matrices

Details A_4 model for the quark mass matrices A_4 model for the quark mass matrices

2007-11-05

arxiv.org/abs/0711.0670v3

Eur.Phys.J.C55:303-308,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures, clarifications and reference added, v3: version to appear in EPJC

Scientific paper

10.1140/epjc/s10052-008-0562-1

We propose a model for the quark masses and mixings based on an A_4 family symmetry. Three scalar SU(2) doublets form a triplet of A_4. The three left-handed-quark SU(2) doublets are also united in a triplet of A_4. The right-handed quarks are singlets of A_4. The A_4-symmetric scalar potential leads to a vacuum in which two of the three scalar SU(2) doublets have expectation values with equal moduli. Our model makes an excellent fit of the observed |V_ub/V_cb|. The symmetry CP is respected in the charged gauge interactions of the quarks.

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