منابع مشابه
Neutrino Mass and Grand Unification
Seesaw mechanism appears to be the simplest and most appealing way to understand small neutrino masses observed in recent experiments. It introduces three right handed neutrinos with heavy masses to the standard model, with at least one mass required by data to be close to the scale of conventional grand unified theories. This may be a hint that the new physics scale implied by neutrino masses ...
متن کاملNeutrino Masses and Grand Unification
We discuss some models of neutrino masses and mixings in the context of fermion masses in Grand Unified Theories. Talk given at the 6th International Workshop on Topics in Astroparticle and Underground Physics (TAUP 99) 6–10 September 1999, Paris, France
متن کاملRescuing Grand Unification Scenario for Neutrino Mass
The see-saw mechanism for neutrino masses based on the Grand Unification leads to the mass of the heaviest neutrino (≈ ντ ) in the range (2−3) ·10−3 eV and hence to a solution of the solar neutrino problem through the νe − ντ conversion. We suggest the existence of a light singlet fermion S which mixes predominantly with muon neutrino through the mixing mass mμs ∼ O(1) eV. The introduction of s...
متن کاملHints of Grand Unification in Neutrino Data ∗
There are strong indications for neutrino masses and mixings in the data on solar neutrinos , the observed deficit of muon neutrinos from the atmosphere as well as from discussions of the dark matter of the universe after COBE data. It is argued that an SO(10) grand unified theory has the right symmetry breaking properties needed to accomodate the neutrino masses and mixings suggested by these ...
متن کاملPredicting the neutrino spectrum in minimal SO(10) grand unification.
I analyse the model of Babu and Mohapatra for the fermion mass matrices in minimal SO(10). Those authors have not considered the whole variety of fits to the experimental data possible with their mass matrices. Consequently, their predictions for the neutrino spectrum are incomplete. I survey various types of neutrino spectra possible in their model. Babu and Mohapatra (BM) [1] have recently no...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2001
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.86.3488