Year: 1999
Type: article
Abstract: A simple extension of the standard model is proposed in which all the three generations of neutrinos are Dirac particles and are naturally light. We then assume that the neutrino mass matrix is diagonal and degenerate, with a few eV mass to solve the dark matter problem. The self-energy radiative corrections, however, remove this degeneracy and allow mixing of these neutrinos. The electroweak radiative corrections then predict a lower bound on the ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{-}{\ensuremath{\nu}}_{e}$ mass difference which solves the solar neutrino problem through the MSW mechanism and also predict a lower bound on the ${\ensuremath{\nu}}_{\ensuremath{\tau}}\ensuremath{-}{\ensuremath{\nu}}_{\ensuremath{\mu}}$ mass difference which is just enough to explain the atmospheric neutrino problem as reported by Super-Kamiokande.
Author: Utpal Sarkar
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2009227618