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  CP violation due to multi Froggatt-Nielsen fields

Kanemura, S., Matsuda, K., Ota, T., Petcov, S., Shindou, T., Takasugi, E., et al. (2007). CP violation due to multi Froggatt-Nielsen fields. High Energy Physics, C51, 927-931. doi:10.1140/epjc/s10052-007-0343-2.

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 Creators:
Kanemura, Shinya1, Author
Matsuda, Koichi1, Author
Ota, Toshihiko2, Author           
Petcov, Serguey1, Author
Shindou, Tetsuo1, Author
Takasugi, Eiichi1, Author
Tsumura, Koji1, Author
Affiliations:
1Department of Physics Osaka University, Toyonaka Osaka 560-0043 Japan Department of Physics University of Toyama, 3190 Gofuku Toyama 930-8555 Japan Department of Physics Osaka University, Toyonaka Osaka 560-0043 Japan Center for High Energy Physics, Tsinghua University Beijing 100084 China Scuola Internazionale Superiore di Studi Avanzati, I-34014 Trieste Italy Instituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34014 Trieste Italy Department of Physics Osaka University, Toyonaka Osaka 560-0043 Japan, ou_persistent22              
2Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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 Abstract: We 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 \alpha. 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.

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Language(s): eng - English
 Dates: 2007
 Publication Status: Issued
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Title: High Energy Physics
  Alternative Title : Eur. Phys. J.
Source Genre: Journal
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Pages: - Volume / Issue: C51 Sequence Number: - Start / End Page: 927 - 931 Identifier: -