Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-06-08
Phys.Rev. D65 (2002) 053010
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX4; 7 pages; typos corrected; clarification remarks added; more references added. To appear in Physical Review D
Scientific paper
10.1103/PhysRevD.65.053010
A model based on SUSY SO(10) combined with U(2) family symmetry constructed recently by the authors is generalized to include phases in the mass matrices leading to CP violation. In contrast with the commonly used effective operator approach, $\bar{126}$-dimensional Higgs fields are utilized to construct the Yukawa sector. R-parity symmetry is thus preserved at low energies. The symmetric mass textures arising from the left-right symmetry breaking chain of SO(10) give rise to very good predictions for quark and lepton masses and mixings. The prediction for $\sin 2\beta$ agrees with the average of current bounds from BaBar and Belle. In the neutrino sector, our predictions are in good agreement with results from atmospheric neutrino experiments. Our model favors both the LOW and QVO solutions to the solar neutrino anomaly; the matrix element for neutrinoless double beta decay is highly suppressed. The leptonic analog of the Jarlskog invariant, $J_{CP}^{l}$, is predicted to be of $O(10^{-2})$.
Chen Mu-Chun
Mahanthappa Kalyana T.
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