CP Violation and the Light Quark Sector

Details CP Violation and the Light Quark Sector CP Violation and the Light Quark Sector

1999-09-09

arxiv.org/abs/hep-ph/9909303v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex 16 pages. Invited talk given at the 13th Rencontres de Physique de la Vallee d'Aoste, Results and Perspectives in Partic

Scientific paper

In view of the observed strong hierarchy of quark masses, we discuss a new description of flavor mixing which is particularly suited for models of quark mass matrices based on flavor symmetries. The necessary and sufficient conditions for CP violation are clarified. The emergence of CP violation is primarily linked to a large phase difference (near 90^{\circ}) in the light quark sector. The unitarity triangle is determined by the mass ratios of the light quarks. We conclude that the unitarity triangle should be close or identical to a rectangular triangle, and CP violation is maximal in this sense.

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