Flavour-symmetric type-II Dirac neutrino seesaw mechanism

oleh: Cesar Bonilla, J.M. Lamprea, Eduardo Peinado, Jose W.F. Valle

Format: Article
Diterbitkan: Elsevier 2018-04-01

Deskripsi

We propose a Standard Model extension with underlying A4 flavour symmetry where small Dirac neutrino masses arise from a Type-II seesaw mechanism. The model predicts the “golden” flavour-dependent bottom-tau mass relation, requires an inverted neutrino mass ordering and non-maximal atmospheric mixing angle. Using the latest neutrino oscillation global fit [1] we derive restrictions on the oscillation parameters, such as a correlation between δCP and mνlightest. Keywords: Neutrino masses and mixing, Flavour physics