186 research outputs found
A Neutrino Mass Matrix Model with many Quantum charges and No SUSY
We present a model based on our favourite gauge group which we call Anti-GUT
and which in its extended form to be applied for neutrinos in the see-saw
picture consists in that we have for each family separately a set of gauge
fields as in the Standard Model plus a gauged (B-L)-charge. It may function as
a concrete model manifestation of the type of model suggested by some general
statistical considerations as to what a mass matrix model is to be to match
naturally the rough features of the spectrum and the baryon asymmetry so nicely
obtained in see-saw models along the Fukugita-Yanagida scheme.Comment: 20 pages, Latex2e; Contribution to The Scandinavian Neutrino
Workshop, Uppsala, Sweden, 8-10 February 200
Neutrino Oscillations in Extended Anti-GUT Model
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 gauge field
coupled to the 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 favours 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 for
making a ``finetuning''-principle to ``explain'' the large ratios found
empirically in physics, and answer such questions as ``why is the weak scale
low compared to the Planck scale?'', is proposed. A further very speculative
extension is supposed to ``explain'' why we have three families.Comment: 40 page LaTeX file; talk given at the Second Tropical Workshop on
Particle Physics and Cosmology, San Juan, Puerto Rico, May 200
Five adjustable parameter fit of quark and lepton masses and mixings
AbstractWe develop a model of ours fitting the quark and lepton masses and mixing angles by removing from the model a Higgs field previously introduced to organise a large atmospheric mixing angle for neutrino oscillations. Due to the off-diagonal elements dominating in the seesaw neutrino mass matrix the large atmospheric mixing angle comes essentially by itself. It turns out that we have now only five adjustable Higgs field vacuum expectation values needed to fit all the masses and mixings order of magnitudewise taking into account the renormalisation group runnings in all sectors. The CHOOZ angle comes out close to the experimental bound
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