Deviations in Tribimaximal Mixing From Sterile Neutrino Sector

Abstract

We explore the possibility of generating a non-zero $U_{e3}$ element of the neutrino mixing matrix from tribimaximal neutrino mixing by adding a light sterile neutrino to the active neutrinos. Small active-sterile mixing can provide the necessary deviation from tribimaximal mixing to generate a non-zero ${\theta }_{13}$ and atmospheric mixing ${\theta }_{23}$ different from maximal. Assuming no CP-violation, we study the phenomenological impact of sterile neutrinos in the context of current neutrino oscillation data. The tribimaximal pattern is broken in such a manner that the second column of tribimaximal mixing remains intact in the neutrino mixing matrix.

arXiv comment13 pages, 5 figures, 2 tables

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• Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• New mixing schemes for (3+1) neutrinos
• Neutrino Phenomenology and Dark matter in an $A_4$ flavour extended B-L model
• Fully constrained mass matrix: Can symmetries alone determine the flavon vacuum alignments?
• Further study on the textures of neutrino mass matrix for maximal atmospherical mixing angle and Dirac CP phase
• Phenomenology of Trimaximal mixing with one texture equality