An SO(10) GUT Model With Lopsided Mass Matrix and Neutrino Mixing Angle theta₁3

Ji, Xiangdong; Li, Yingchuan; Mohapatra, R. N.

doi:10.1016/j.physletb.2006.01.005

arXiv 2005-10-27 DOI 10.1016/j.physletb.2006.01.005 0 views

An SO(10) GUT Model With Lopsided Mass Matrix and Neutrino Mixing Angle theta₁3

Ji, Xiangdong · Li, Yingchuan · Mohapatra, R. N.

High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory

Original · EN

An alternative supersymmetric SO(10) grand unification model with lopsided fermion mass matrices is introduced. It generates a large solar-neutrino-mixing angle through the neutrinos' Dirac mass matrix constrained by the SO(10) group structure, avoiding the fine-tuning required in the Majorana mass matrix of right-handed neutrinos. The model fits well the known data on masses and mixings of quarks and leptons, and predicts a sizable lepton mixing ²2θ₁₃≃ 0.074, which is significantly larger than that of the original lopsided model.

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