The Majorana neutrino mass matrix indicated by the current data

Abstract

The Majorana neutrino mass matrix combines information from the neutrino masses and the leptonic mixing in the flavor basis. Its invariance under some transformation matrices indicates the existence of certain residual symmetry. We offer an intuitive display of the structure of the Majorana neutrino mass matrix, using the whole set of the oscillation data. The structure is revealed depending on the lightest neutrino mass. We find that there are three regions with distinct characteristics of structure. A group effect and the $\mu$-$\tau$ exchange symmetry are observed. Six types of texture non-zeros are shown. Implications for flavor models are discussed.

18 Latex pages, 8 figures

References in corpus (9)

• Observation of electron-antineutrino disappearance at Daya Bay
• Global status of neutrino oscillation parameters after Neutrino-2012
• Global fit to three neutrino mixing: critical look at present precision
• Limit on Neutrinoless ββ Decay of Xe-136 from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in Ge-76
• S_4 Flavored CP Symmetry for Neutrinos
• Octahedral Symmetry with Geometrical Breaking: New Prediction for Neutrino Mixing Angle theta_{13} and CP Violation
• Anthropic considerations in nuclear physics
• Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector
• Softly broken $\mu \leftrightarrow \tau$ symmetry in the minimal see-saw model