Atmospheric neutrino oscillation and a phenomenological lepton mass matrix

1997/09/30 by M. Fukugita, M. Tanimoto, Morimitsu Tanimoto +1 · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.57.4429

published as Phys.Rev. D57 (1998) 4429-4432 · 10 pages, Latex file, small corrections in text and references, to appear in PRD

arxiv created 1998/01/13 · openalex publication_date 1998/04/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose simple phenomenological lepton mass matrices which describe the three neutrinos almost degenerate in mass, leading to a very large mixing angle between \ensuremathν_\ensuremathμ and \ensuremathν_\ensuremathτ, as consistent with a recent report on atmospheric neutrino oscillations from the SuperKamiokande Collaboration. Our matrix model also gives \ensuremathν_e\ensuremath-\ensuremathν_\ensuremathμ mixing in agreement with the value required for neutrino oscillation to explain the solar neutrino problem.

Citations

• Observation of a small atmospheric vμ/ve ratio in Kamiokande
• Accommodating solar and atmospheric neutrino deficits, hot dark matter, and a double β decay signal
• Long-wavelength oscillations and the new gallium solar neutrino signals

Cited by

• Texture of neutrino mass matrix in view of recent neutrino experimental results
• Democratic (s)fermions and lepton flavor violation