Neutrino Masses in GUTs and the Baryon Asymmetry
Abstract
We study the implications of large neutrino mixings for grand unified theories based on the seesaw mechanism. In SU(5) GUTs large mixings can be accommodated by means of U(1)F flavour symmetries. In these models the heavy Majorana neutrinos are essentially decoupled from low energy neutrino physics. On the contrary in SO(10) GUTs large neutrino mixings severely constrain the mass spectrum of the heavy Majorana neutrinos. This leads to predictions for a variety of observables in neutrino physics as well as for the baryon asymmetry.
- Publication:
-
Acta Physica Polonica B
- Pub Date:
- November 2001
- DOI:
- 10.48550/arXiv.hep-ph/0111195
- arXiv:
- arXiv:hep-ph/0111195
- Bibcode:
- 2001AcPPB..32.3707B
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- 13 pages, presented at the 5th Adriatic Meeting, Dubrovnik, and the XXV Int. School of Theoretical Physics, Ustron, September 2001