1212.4806 (Michael Gustafsson et al.)

The Cocktail Model: Neutrino Masses and Mixings with Dark Matter    [PDF]

Michael Gustafsson, Jose Miguel No, Maximiliano A. Rivera

We construct a minimal model that naturally generates small neutrino masses and provides a dark matter candidate. The symmetry making the dark matter particle stable simultaneously suppresses neutrino masses to appear first at 3-loop level. This provides an elegant explanation for the observed mass hierarchy m_nu/v ~ 10^-13, without introducing right-handed neutrinos. The dark matter particle is part of an inert scalar doublet that plays a crucial role in the radiative neutrino mass generation. The model gives distinct predictions: normal neutrino mass hierarchy, a flavour mixing angle theta_13 ~ 7 - 11 degrees, new charged scalars at around the electroweak scale and a dark matter candidate in the mass range 50 to 75 GeV.

View original: http://arxiv.org/abs/1212.4806