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has been cited by the following article:

• TITLE: Quasi-Degenerate Neutrino Masses with Normal and Inverted Hierarchy

  AUTHORS: Ng. K. Francis, N. Nimai Singh

  KEYWORDS: QDN Models, Absolute Neutrino Masses, CP-Phases

  JOURNAL NAME: Journal of Modern Physics, Vol.2 No.11, November 23, 2011

  ABSTRACT: The effects of CP-phases on the three absolute quasi-degenerate Majorana neutrino (QDN) masses are studied with neutrino mass matrices obeying µ – τ symmetry for normal as well as inverted hierarchical mass patterns. We have made further investigations on 1) the prediction of solar mixing angle which lies below tri-bimaximal mixing value in consistent with neutrino oscillation observational data, 2) the prediction on absolute neutrino mass parameter (mee) in 0νββ decay, and 3) cosmological bound on the sum of the three absolute neutrino masses . The numerical analysis is carried out through the parameterization of neutrino mass matrices using only two unknown parameters (ε, η) within µ – τ symmetry. The results show the validity of QDN mass models in both normal and inverted hierarchical patterns. These models are far from discrimination and hence not yet ruled out. The results presented in this article are new and have subtle ef- fects in the discrimination of neutrino mass models.