Planck scale effects in neutrino physics
Abstract
We study the phenomenology and cosmology of the Majoron (flavon) models of three active and one inert neutrino paying special attention to the possible (almost) conserved generalization of the Zeldovich-Konopinski-Mahmoud lepton charge. Using Planck scale physics effects which provide the breaking of the lepton charge, we show how in this picture one can incorporate the solutions to some of the central issues in neutrino physics such as the solar and atmospheric neutrino puzzles and the dark matter problem with the possible existence of a heavy (1-10 keV) neutrino. These gravitational effects induce tiny Majorana mass terms for neutrinos and considerable masses for flavons. The cosmological demand for the sufficiently fast decay of flavons implies a lower limit on the electron-neutrino mass in the range of 0.1-1 eV.
- Publication:
-
Physical Review D
- Pub Date:
- April 1993
- DOI:
- 10.1103/PhysRevD.47.3245
- arXiv:
- arXiv:hep-ph/9208230
- Bibcode:
- 1993PhRvD..47.3245A
- Keywords:
-
- 98.80.Ft;
- 11.30.Hv;
- 12.15.Ff;
- 14.60.Gh;
- Origin formation and abundances of the elements;
- Flavor symmetries;
- Quark and lepton masses and mixing;
- High Energy Physics - Phenomenology
- E-Print:
- 24 pages, 1 figure (not included but available upon request), LaTex, IC/92/196, SISSA-140/92/EP, LMU-09/92