Abstract

Flavor physics is a key ingredient for high-energy model building. Flavor-changing processes set among the strongest constraints on most new physics models at the TeV scale: even under the most conservative assumptions, the precision of near-future experiments will allow us to probe energy scales beyond the ones accessible with direct investigation. At the same time, the non-trivial flavor patterns needed to match the various constraints can provide insights on the structure of the high-energy models themselves. I will review a few significant examples, focussing in particular on flavor symmetries and lepton universality, both in the effective theory and in explicit models. In the second part of the talk, I will also discuss a model with light and weakly coupled new particles, which can be of interest for Dark Matter in view of the recent Xenon1T results.