Flavor Symmetry and Vacuum Aligned Mass Textures(Particle and Field)

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概要

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• The mass matrix forms of quarks and leptons are studied in a theory with permutation flavor symmetry. The structure of the scalar potential is analyzed in the case that the electroweak doublet Higgs fields have non-trivial flavor symmetry charges. We find that realistic forms of the mass matrices are obtained dynamically in the vacuum of the theory, where some of the Higgs fields have vanishing expectation values which lead to vanishing elements in the quark and lepton mass matrices. Mass textures are realized in the true vacuum, and their positions are controlled by the flavor symmetry. An interesting point is that, due to the flavor group structure, the up and down quark mass matrices are automatically different in the vacuum. This leads to non-vanishing generation mixing. It is also discussed that it is necessary for the flavor symmetry to be broken to realize scalars whose masses are not too small. The lower bounds of the Higgs masses are derived from the experimental data of flavor-changing rare processes, such as neutral K meson mixing.

• 理論物理学刊行会の論文
• 2007-01-25

著者

• Yoshioka Koichi

  Physics Department Kyushu University

• SAWANAKA Hideyuki

  Graduate School of Science and Technology, Niigata University

• Tanimoto Morimitsu

  Physics Department Niigata University

• Sawanaka Hideyuki

  Graduate School Of Science And Technology Niigata University

• Kaneko Satoru

  Ahep Group Institut De Fisica Corpuscular-c.s.i. C Universitat De Valencia Edifici Instituts D'

• Shingai Takaya

  Graduate school of Science and Technology, Niigata University

• Shingai Takaya

  Graduate School Of Science And Technology Niigata University

• KANEKO Satoru

  AHEP Group, Institut de Fisica Corpuscular-C.S.I. C Universitat de Valencia, Edifici Instituts d'Investigacio

関連論文

• Genuine Symmetry of a Staggered Fermion(Particles and Fields)
• Flavor Symmetry and Vacuum Aligned Mass Textures(Summer Institute 2006)
• Flavor Symmetry and Vacuum Aligned Mass Textures(Particle and Field)
• Rotational Symmetry and a Light Mode in Two-Dimensional Staggered Fermions(Particles and Fields)
• Predictive avour symmetries of the neutrino mass matrix(Summer Institute 2007)

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