Chinese Physics C > 2006, Vol. 30 > Issue(12): 1200-1205

Model of Geometric Neutrino Mixing and Leptogenesis

HE Xiao-Gang^,

Department of Physics, Nankai University, Tianjin 300071, ChinaDepartment of Physics, Taiwan University, Taipei, China

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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 sin ²θ ₁₂=1/3, sin ²θ ₂₃=1/2, and sin ²θ ₁₃=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 A ₄, 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.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

Model of Geometric Neutrino Mixing and Leptogenesis

HE Xiao-Gang^,

Corresponding author:HE Xiao-Gang,

Department of Physics, Nankai University, Tianjin 300071, ChinaDepartment of Physics, Taiwan University, Taipei, China

Received Date:2006-07-10
Accepted Date:1900-01-01
Available Online:2006-12-05

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.