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Neutrino oscillations in extended Anti-GUT model

Froggatt, C.D., Nielsen, H.B., and Takanishi, Y. (2000) Neutrino oscillations in extended Anti-GUT model. In: 2nd Tropical workshop - Particle physics and cosmology, May 2000, San Juan, PR.

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Publisher's URL: http://dx.doi.org/10.1063/1.1328879

Abstract

What we call the Anti-GUT model is extended a bit to include also right handed neutrinos and thus make use of the see-saw mechanism for neutrino masses. This model consists in assigning gauge quantum numbers to the known Weyl fermions and the three see-saw right handed neutrinos. Each family (generation) is given its own Standard Model gauge fields and a gauged field coupled to the B-L quantum number for that family alone. Further we assign a rather limited number of Higgs fields, so as to break these gauge groups down to the Standard Model gauge group and to fit w.r.t. order of magnitude the spectra and mixing angles of the quarks and leptons. We find a rather good fit, which for neutrino oscillations favour the small mixing angle MSW solution, although the mixing angle predicted is closest to the upper side of the uncertainty range for the measured solar neutrino mixing angle. An idea to make a "fine tuning"-principle to "explain" the large ratios found empirically in physics such as "why is the weak scale low compared to the Planck scale?" is proposed (solving a hierarchy problem related problem). Some speculative further extension is supposed to "explain" that we have three families.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s):Froggatt, Prof Colin
Authors: Froggatt, C.D., Nielsen, H.B., and Takanishi, Y.
Subjects:Q Science > QB Astronomy
Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:AIP Conference Proceedings
ISSN:0094-243X

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