Neutrino oscillations from discrete non-Abelian family symmetries
The author discusses a SUSY-GUT model with a non-Abelian discrete family symmetry that explains the observed hierarchical pattern of quark and lepton masses. This SO(10) {times} {Delta}(75) model predicts modified quadratic seesaw neutrino masses and mixing angles which are interesting for three reasons: (1) they offer a solution to the solar neutrino problem, (2) the tau neutrino has the right mass for a cosmologically interesting hot dark matter candidate, and (3) they suggest a positive result for the {nu}{sub {mu}} {yields} {nu}{sub {tau}} oscillation searches by the CHORUS and NOMAD collaborations. However, the model shares some problems with many other predictive GUT models of quark and lepton masses. Well-known and once successful mass and angle relations, such as the SU(5) relation {lambda}{sub b}{sup GUT} = {lambda}{sub t}{sup GUT}, are found to be in conflict with the current experimental status. Attempts to correct these relations seem to lead to rather contrived models.
- Research Organization:
- Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG06-90ER40561
- OSTI ID:
- 10105470
- Report Number(s):
- DOE/ER/40561-168; ON: DE95004355; IN: INT94-00-74; BR: 35KB01000/KB0300000; TRN: AHC29503%%142
- Resource Relation:
- Other Information: PBD: Nov 1994
- Country of Publication:
- United States
- Language:
- English
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