Froggatt-Nielsen models from E8 in F-theory GUTs

Understand

This paper studies F-theory SU(5) GUT models where the three generations of the standard model come from three different curves.

• All the matter is taken to come from curves intersecting at a point of enhanced E8 gauge symmetry.
• Giving a vev to some of the GUT singlets naturally implements a Froggatt-Nielsen approach to flavour structure.
• A scan is performed over all possible models and the results are filtered using phenomenological constraints.