Neutrino Masses and Mixings in a Universal Seesaw Mass Matrix Model

Abstract

Neutrino masses and mixings are investigated on the basis of a universal seesaw mass matrix model, in which quark (except for top) and charged lepton mass matrices M_f and neutrino mass matrix M_νare given by M_f \simeq m_L M_F^{-1} m_R and M_ν\simeq m_L M_F^{-1} m_L^T (F=N), respectively. For a simple model which can successfully describe quark masses and mixings, we find that the observed neutrino data (except for the solar neutrino data) are favor to the intermediate mass scales O(m_R) = 10^{11} GeV and O(M_F)= 10^{13} GeV together with O(m_L)= 10^2 GeV. In spite of the largesse of O(m_R), the observed top quark mass can be consistently understood from the would-be seesaw mass matrix with these mass scales.

19 pages (Latex file)

References in corpus (3)

• The top quark mass and flavor mixing in a Seesaw model of Quark Masses
• Analytical Expressions of Masses and Mixings in a Democratic Seesaw Mass Matrix Model
• Abnormal Structure of Fermion Mixings in a Seesaw Quark Mass Matrix Model

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• Democratic Universal Seesaw Model with Three Light Sterile Neutrinos
• Evolution of the Yukawa coupling constants and seesaw operators in the universal seesaw model
• Seesaw Mass Matrix Model of Quarks and Leptons with Flavor-Triplet Higgs Scalars
• A Unified Description of Quark and Lepton Mass Matrices in a Universal Seesaw Model
• Coupling Constants Evolution in a Universal Seesaw Mass Matrix Model