S_4 Flavor Symmetry of Quarks and Leptons in SU (5) GUT(Particles and Fields)

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概要

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• We present an S_4 flavor model to unify quarks and leptons in the framework of the SU (5) GUT. Three generations of 5^^--plets in SU (5) are assigned to 3_1 of S_4, while the first and second generations of 10-plets in SU (5) are assigned to 2 of S_4, and the third generation of 10-plets is assigned to 1_1 of S_4. Right-handed neutrinos are also assigned to 2 for the first and second generations and to 1_1 for the third generation. By considering the vacuum alignments of relevant gauge singlet scalars, we predict the quark mixing as well as the tribimaximal mixing of neutrino flavors. In particular, the Cabbibo angle is predicted to be 15° in the limit of the vacuum alignment. We can improve the model to predict observed CKM mixing angles as well as the nonvanishing U_<e3> of the neutrino flavor mixing.

• 理論物理学刊行会の論文
• 2009-04-25

著者

• ISHIMORI Hajime

  Graduate School of Science and Technology, Niigata University

• SHIMIZU Yusuke

  Graduate School of Science and Technology, Niigata University

• TANIMOTO Morimitsu

  Department of Physics, Niigata University

• Shimizu Yusuke

  Graduate School Of Science And Technology Niigata University

• Ishimori Hajime

  Graduate School Of Science And Technology Niigata University

• Tanimoto Morimitsu

  Department Of Physics Ehime University

• Shimizu Yusuke

  Graduate School Of Science And Engineering University Of Toyama

• Ishimori Hajime

  Niigata Univ. Niigata Jpn

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