학술논문
Flavour-symmetric type-II Dirac neutrino seesaw mechanism
Document Type
article
Source
Physics Letters B, Vol 779, Iss , Pp 257-261 (2018)
Subject
Language
English
ISSN
0370-2693
Abstract
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