Symmetric Mass Matrix with Two Zeros in SUSY SO(10) GUT, Lepton Flavor Violations and Leptogenesis

Abstract

We study the symmetric 2-zero texture of the neutrino mass matrix, which is obtained from the symmetric Dirac neutrino mass matrix with 2-zeros and right-handed Majorana neutrino mass matrix with the general form via the see-saw mechanism, for the SUSY SO(10) GUT model including the Pati-Salam symmetry. We show that the only one texture in our model, having degenerate mass spectrum for the 1st and 2nd generation of right-handed Majorana neutrino, can simultaneously explain the current neutrino experimental data, lepton flavor violating processes and baryon asymmetry of the Universe. Within such a framework, the predicted values of the light and heavy Majorana neutrino masses, together with $|U_{e3}|$, $J_{\mathrm{CP}}$ and $|<M_{ee}>|$, are almost uniquely determined.

arXiv comment36 pages, latex, 17 figures. Preprint version contains "low resolution" figures to reduce the size of overall postscript file. Please contact authors to obtain the high resolution version. Some references added. Section 1 and subsection 2.1 are revised, conclusions are not changed, typos corrected

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• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Mass and Flavor Mixing Schemes of Quarks and Leptons

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