Wuppertal 2015 – scientific programme
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T: Fachverband Teilchenphysik
T 58: Jenseits des Standardmodells 2 (Theorie)
T 58.6: Talk
Tuesday, March 10, 2015, 18:00–18:15, K.11.20 (K5)
Predicting Lepton Mixing Parameters including Majorana Phases from Δ(6n2) Flavour Symmetry and Generalised CP — •Thomas Neder — University of Southampton, Southampton, UK
An important class of flavour groups that are subgroups of U(3) and that predict experimentally viable lepton mixing parameters including Majorana phases is the Δ(6n2) series. The most well-known member is Δ(24)=S4. I present results of several extensive studies of lepton mixing predictions obtained in models with a Δ(6n2) flavour group that preserve either the full Klein symmetry or a Z2 subgroup for neutrinos and can include a generalised CP symmetry. Predictions include mixing angles and Dirac CP phase generally; and if invariance under a generalised CP symmetry is included, also Majorana phases. For this, the interplay of flavour group and generalised CP symmetry has to be studied carefully. Furthermore, I present results for neutrinoless double-beta decay.