Lepton mixing patterns from $PS{L}_2(7)$ with a generalised CP symmetry

Abstract

Lepton mixing patterns from the modular group $PS{L}_2(7)$ with generalised CP symmetries are studied. The residual symmetries in both charged leptons and neutrinos sector are $Z_2\times CP$. Seven types of mixing patterns at the $3\sigma$ level of the new global fit data are obtained. Among these patterns, three types of patterns can give the Dirac CP phase which is in the $1\sigma$ range of the global fit data. The effective mass of neutrinoless double-beta decay for these patterns are also examined.

arXiv comment22 pages, 3 figures. arXiv admin note: text overlap with arXiv:1906.09157

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