Exploring the neutrino mass matrix at theMRscale

2002/06/30 by Takahiro Miura, Tetsuo Shindou, Eiichi Takasugi
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.66.093002

published as Phys.Rev. D66 (2002) 093002 · revtex4, 20 pages, 6 figures

arxiv created 2002/09/10 · openalex publication_date 2002/11/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We discuss the neutrino mass matrix which predicts zero or small values of |V₁₃| in the MSSM and find the inequality, sin²2\ensuremathθ₁₂<~sin²2\ensuremathθ_\ensuremath\bigodot, where sin²2\ensuremathθ₁₂ is the mixing angle at the M_R scale and sin²2\ensuremathθ_\ensuremath\bigodot is the value determined by the solar neutrino oscillation. This constraint says that the model which predicts a larger value of tan²\ensuremathθ₁₂ at M_R than the experimental value is excluded. In particular, the bimaximal mixing scheme at the M_R scale is excluded from the experimental value tan²\ensuremathθ_\ensuremath\bigodot<1. In this model, |V₁₃| and a Dirac phase at m_Z which are induced radiatively may not be small.

Citations

• Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
• Renormalization of the neutrino mass operator
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• The dark side of the solar neutrino parameter space