New Hybrid Textures for Neutrino Mass Matrices

Abstract

We perform a systematic investigation of the texture structures of Majorana neutrino mass matrix $M_{\nu }$ having two texture zeros and an equality between two nonzero matrix elements, in the light of recent neutrino oscillation data. Among forty-two possible textures, it is found that only eight textures are compatible with the current experimental data at 3$\sigma$ C.L. Out of these phenomenologically viable textures, six follow normal mass ordering while remaining two satisfy the inverted mass ordering of neutrino mass spectrum. In the numerical analysis, we carry out a scan over the possible space of all viable patterns. We present the implications of each allowed patterns for three mixing angles (solar, reactor and atmospheric), leptonic CP-violation, neutrino mass scale and the neutrinoless double beta decay indicating strong correlations between oscillation parameters. The symmetry realization of one of the viable textures is also presented.

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Cited by in corpus (7)

• Texture of Two Vanishing Subtraces in Neutrino Mass Matrix and Current Experimental Tests
• A new texture of neutrino mass matrix with three constraints
• Phenomenology of Trimaximal mixing with one texture equality
• Implications of CP invariants for flavoured hybrid neutrino mass matrix
• Investigation of a kind of neutrino mass matrix
• Embedding Generalized CP Symmetry in One Zero Texture Neutrino Mass Models
• Minimal structure for neutrino mass matrix