A4 symmetry and lepton masses and mixing |
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Authors: | Y. Koide |
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Affiliation: | (1) Institute for Higher Education Research and Practice, Osaka University, 1-16 Machikaneyama, Toyonaka, Osaka 560-0043, Japan |
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Abstract: | Stimulated by Ma’s idea, which explains the tribimaximal neutrino mixing by assuming an A4 flavor symmetry, a lepton mass matrix model is investigated. A Frogatt–Nielsen-type model is assumed, and the flavor structures of the masses and mixing are caused by the VEVs of SU(2)L singlet scalars φi u and φi d (i=1,2,3), which are assigned to 3 and (1 ,1 ’,1 ”) of A4, respectively. Possible charged lepton and neutrino mass spectra and mixing are investigated. |
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