A model of neutrino mass and dark matter with large neutrinoless double beta decay

Understand

We propose a model where neutrino masses are generated at three loop order but neutrinoless double beta decay occurs at one loop.

• Thus we can have large neutrinoless double beta decay observable in the future experiments even when the neutrino masses are very small.
• The model receives strong constraints from the neutrino data and lepton flavor violating decays, which substantially reduces the number of free parameters.
• Our model also opens up the possibility of having several new scalars below the TeV regime, which can be explored at the collider experiments.