An SO ( 10 ) × S 4 Scenario for Naturally
نویسنده
چکیده
The simplest scenario for the three known light neutrinos that fits the solar and atmospheric neutrino deficit and a mixed dark matter (MDM) picture of the universe requires them to be highly degenerate with mν ∼ 1 2 eV. We propose an SO(10) grand unified model with an S4-horizontal symmetry that leads naturally to such a scenario. An explicit numerical analysis of the quark and lepton sector of the model shows that it can lead to desired mass differences to fit all data only for the small angle non-adiabatic MSW solution to the solar neutrino puzzle. Work supported by the National Science Foundation Grant PHY-9119745 In the two recent papers, it has been pointed out by Caldwell and one of the authors (R.N.M.)[1] that if the existing data on solar[2] and atmospheric neutrino[3] deficit is confirmed and if the presently popular mixed dark matter (MDM)[4] model of the universe requiring a few eV neutrino as its hot component is taken seriously, then the simplest three-light neutrino (νe, νμ, ντ ) mass matrix that fits all data has the following form:
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تاریخ انتشار 1994