CP violation due to multi Froggatt-Nielsen fields

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dc.creatorKanemura, Shinya
dc.creatorMatsuda, Koichi
dc.creatorOta, Toshihiko
dc.creatorPetcov, Serguey
dc.creatorShindou, Tetsuo
dc.creatorTakasugi, Eiichi
dc.creatorTsumura, Koji
dc.date2007-04-05
dc.date.accessioned2026-07-07T10:59:24Z
dc.date.available2026-07-07T10:59:24Z
dc.descriptionWe study how to incorporate CP violation in the Froggatt--Nielsen (FN) mechanism. To this end, we introduce non-renormalizable interactions with a flavor democratic structure to the fermion mass generation sector. It is found that at least two iso-singlet scalar fields with imposed a discrete symmetry are necessary to generate CP violation due to the appearance of the relative phase between their vacuum expectation values. In the simplest model, ratios of quark masses and the Cabibbo-Kobayashi-Maskawa (CKM) matrix including the CP violating phase are determined by the CKM element |V_{us}| and the ratio of two vacuum expectation values R=|R|e^{i*alpha} (a magnitude and a phase). It is demonstrated how the angles phi_i (i=1--3) of the unitarity triangle and the CKM off-diagonal elements |V_{ub}| and |V_{cb}| are predicted as a function of |V_{us}|, |R| and α. Although the predicted value of the CP violating phase does not agree with the experimental data within the simplest model, the basic idea of our scenario would be promising to construct a more realistic model of flavor and CP violation.
dc.description8 pages, no figure
dc.identifierhttps://arxiv.org/abs/0704.0697
dc.identifierhttp://arxiv.org/abs/0704.0697
dc.identifierEur.Phys.J.C51:927-931,2007
dc.identifierdoi:10.1140/epjc/s10052-007-0343-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187391
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCP violation due to multi Froggatt-Nielsen fields
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