CP Violation in a SUSY SO(10) x U(2)_{F} Model

Abstract

We construct a model based on SUSY SO(10) combined with U(2) family symmetry including complex phases 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 2βagrees with the 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}).

5 pages; LaTeX; JHEP style. Talk presented by K.T. Mahanthappa at EPS HEP2001, Budapest, Hungary, 12 - 18 July, 2001, and by M.-C. Chen at Snowmass 2001, Snowmass Village, CO, 30 June - 21 July, 2001