Non-Abelian family symmetries as portals to dark matter

Understand

Non-Abelian family symmetries offer a very promising explanation for the flavour structure in the Standard Model and its extensions.

• We explore the possibility that dark matter consists in fermions that transform under a family symmetry, such that the visible and dark sector are linked by the familons - Standard Model gauge singlet scalars, responsible for spontaneously breaking the family symmetry.
• We study three representative models with non-Abelian family symmetries that have been shown capable to explain the masses and mixing of the Standard Model fermions.
• One of our central results is the possibility to have dark matter fermions and at least one familon with masses on and even below the experimentally accessible TeV scale.