PT Journal
AU Bonilla, C
   Valle, JWF
TI Naturally light neutrinos in Diracon model
SO Physics Letters B
JI Phys. Lett. B
PY 2016
BP 162
EP 165
VL 762
DI 10.1016/j.physletb.2016.09.022
LA English
AB We propose a simple model for Dirac neutrinos where the smallness of neutrino mass follows from a parameter kappa whose absence enhances the symmetry of the theory. Symmetry breaking is performed in a two-doublet Higgs sector supplemented by a gauge singlet scalar, realizing an accidental global U(1) symmetry. Its spontaneous breaking at the few TeV scale leads to a physical Nambu -Goldstone – boson the Diracon, denoted D – which is restricted by astrophysics and induces invisible Higgs decays such as h -> DD. The scheme provides a rich, yet very simple scenario for symmetry breaking studies at colliders such as the LHC.
ER