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Neutrino mixing and leptonic CP violation from S 4 flavour and generalised CP symmetries

]. Open Access. Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. [1] K. Nakamura and S.T. Petcov ... : from Theory to Experiment, New J. Phys. 16 (2014) 045018 [arXiv:1402.4271] [INSPIRE]. [5] S.T. Petcov, Predicting the values of the leptonic CP-violation phases in theories with discrete avour symmetries

Revisiting Minimal Lepton Flavour Violation in the light of leptonic CP violation

/0702194] [INSPIRE]. Based Models, Phys. Rev. D 80 (2009) 053003 [arXiv:0902.2849] [INSPIRE]. [20] S.T. Petcov, On PseudoDirac Neutrinos, Neutrino Oscillations and Neutrinoless Double beta Decay, Phys. Lett ... 09 (2011) 042 [arXiv:1107.5332] [INSPIRE]. [25] S.F. King and C. Luhn, Trimaximal neutrino mixing from vacuum alignment in A4 and S4 [26] P.H. Frampton, S.T. Petcov and W. Rodejohann, On deviations

Generalised geometrical CP violation in a T ′ lepton flavour model

We analyse the interplay of generalised CP transformations and the non-Abelian discrete group T ′ and use the semi-direct product G f = T ′ ⋊H CP, as family symmetry acting in the lepton sector. The family symmetry is shown to be spontaneously broken in a geometrical manner. In the resulting flavour model, naturally small Majorana neutrino masses for the light active neutrinos...