Origin of quark-lepton flavor in SO(10) with type II seesaw mechanism
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Diverse mass and mixing patterns between the quarks and leptons makes it challenging to construct a simple grand unified theory of flavor. We show that SO(10) supersymmetry grand unified theories with type II seesaw mechanism giving neutrino masses provide a natural framework for addressing this issue. A simple ansatz that the dominant Yukawa matrix (the 10-Higgs coupling to matter) has rank one appears to simultaneously explain both the large lepton mixings as well as the observed quark flavor hierarchy in these models. A testable prediction of this ansatz is the neutrino mixing, Ue3, which should be observable in planned long baseline experiments. 2009 The American Physical Society.
author list (cited authors)
Dutta, B., Mimura, Y., & Mohapatra, R. N.