Explicit seesaw with nearly bimaximal neutrino mixing and no LSND effect

2002/07/05 by J. Królikowski, Wojciech Krolikowski, Krolikowski, Wojciech
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0207086

Some improvements introduced

openalex publication_date 2002/07/05 · arxiv created 2002/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

An explicit model of neutrino texture is presented, where in the 6 times 6 mass matrix the Majorana lefthanded component is zero, the Majorana righthanded component - diagonal with equal entries, and the Dirac component gets a hierarchical structure, deformed by nearly bimaximal mixing. If the Majorana righthanded component dominates over the Dirac component, the familiar seesaw mechanism leads effectively to the popular, nearly bimaximal oscillations of active neutrinos. The Dirac component, before its deformation, may be similar in shape to the charged-lepton and quark mass matrices. Then, parameters for solar and atmospheric neutrinos may be related to each other, predicting from the SuperKamiokande value of Delta m₃₂² a tiny Delta m₂₁², typical for MSW LOW solar solution (rather than for MSW Large Mixing Angle solution).

Related

• Explicit seesaw model and deformed fermion universality
• Option of light righthanded neutrinos avoiding oscillations
• Neutrino texture dominated by Majorana lefthanded mass matrix
• Toward neutrino texture dominated by Majorana lefthanded mass matrix
• Fermion universality manifesting itself in the Dirac component of neutrino mass matrix