Examining the Geometrical Model with Inverted Mass Hierarchy for Neutrinos

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dc.creatorHonda, Mizue
dc.creatorTanimoto, Morimitsu
dc.date2007-01-11
dc.date2007-03-17
dc.date.accessioned2026-07-07T11:02:34Z
dc.date.available2026-07-07T11:02:34Z
dc.descriptionThe comprehensive analyses are presented in the model with the inverted mass hierarchy for neutrinos, which follows from a geometrical structure of a (1+5) dimensional space-time where two extra dimensions are compactified on the T^2/Z_3 orbifold. The model gives two large lepton flavor mixings due to the S3 structure in the (1+5) dimensional space-time. It also predicts the lightest neutrino mass as m_3=(1-50)\times 10^{-5}eV and the effective neutrino mass responsible for neutrinoless double beta decays as <m>_{ee}\simeq 50 meV. The low energy CP violation, J_{CP} could be 0.02. On the other hand, the observed baryon asymmetry in the present universe is produced by the non-thermal leptogenesis, which works even at the reheating temperature TR=10^{4}-10^{6}GeV. The correlation between the baryon asymmetry and the low energy CP violation is examined in this model.
dc.description17 pages, 10 figures, a reference is added, minor change in introduction
dc.identifierhttps://arxiv.org/abs/hep-ph/0701083
dc.identifierhttp://arxiv.org/abs/hep-ph/0701083
dc.identifierPhys.Rev.D75:096005,2007
dc.identifierdoi:10.1103/PhysRevD.75.096005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188294
dc.subjectHigh Energy Physics - Phenomenology
dc.titleExamining the Geometrical Model with Inverted Mass Hierarchy for Neutrinos
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