Model of Geometric Neutrino Mixing and Leptogenesis

  • I report results obtained recently in collaboration with on neutrino mixing (hep-ph/0507217). Current neutrino oscillation data are consistent with the neutrino mixing angles taking values sin2θ12=1/3, sin2θ23=1/2, and sin2θ13=0. We present a class of renormalizable gauge models which realize such a geometric mixing pattern naturally. These models, which are based on the non--Abelian discrete symmetry A4, place significant restrictions on the neutrino mass spectrum. It is shown that baryogenesis via leptogenesis occurs quite naturally, with a single phase (determined from neutrino oscillation data) appearing in leptonic asymmetry and in neutrinoless double beta decay.
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HE Xiao-Gang. Model of Geometric Neutrino Mixing and Leptogenesis[J]. Chinese Physics C, 2006, 30(12): 1200-1205.
HE Xiao-Gang. Model of Geometric Neutrino Mixing and Leptogenesis[J]. Chinese Physics C, 2006, 30(12): 1200-1205. shu
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Received: 2006-07-10
Revised: 1900-01-01
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Model of Geometric Neutrino Mixing and Leptogenesis

    Corresponding author: HE Xiao-Gang,
  • Department of Physics, Nankai University, Tianjin 300071, ChinaDepartment of Physics, Taiwan University, Taipei, China

Abstract: I report results obtained recently in collaboration with on neutrino mixing (hep-ph/0507217). Current neutrino oscillation data are consistent with the neutrino mixing angles taking values sin2θ12=1/3, sin2θ23=1/2, and sin2θ13=0. We present a class of renormalizable gauge models which realize such a geometric mixing pattern naturally. These models, which are based on the non--Abelian discrete symmetry A4, place significant restrictions on the neutrino mass spectrum. It is shown that baryogenesis via leptogenesis occurs quite naturally, with a single phase (determined from neutrino oscillation data) appearing in leptonic asymmetry and in neutrinoless double beta decay.

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