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A4 model for the quark mass matrices

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Abstract

We propose a model for the quark masses and mixings based on an A4 family symmetry. Three scalar SU(2) doublets form a triplet of A4. The three left-handed-quark SU(2) doublets are also united in a triplet of A4. The right-handed quarks are singlets of A4. The A4-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 |Vub/Vcb|. CP symmetry is respected in the charged gauge interactions of the quarks.

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Authors and Affiliations

  1. Centro de Física Teórica de Partículas, Instituto Superior Técnico, 1049-001, Lisboa, Portugal

    L. Lavoura

  2. Fakultät für Physik, Universität Wien, Boltzmanngasse 5, 1090, Wien, Austria

    H. Kühböck

Authors
  1. L. Lavoura
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  2. H. Kühböck
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Correspondence to L. Lavoura or H. Kühböck.

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Lavoura, L., Kühböck, H. A4 model for the quark mass matrices. Eur. Phys. J. C 55, 303–308 (2008). https://doi.org/10.1140/epjc/s10052-008-0562-1

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  • DOI: https://doi.org/10.1140/epjc/s10052-008-0562-1

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