Hunting the Flavon

TL;DR

This paper discusses how upcoming experiments, including a 100 TeV collider, will significantly advance the search for flavon particles and flavor physics models, surpassing current constraints.

Contribution

It provides a detailed analysis of future experimental prospects for probing flavons, highlighting the importance of lepton flavor experiments and high-energy colliders.

Findings

Lepton flavor experiments will dominate indirect searches in the coming decades.

A 100 TeV collider can directly probe flavons as propagating degrees of freedom.

Proper background and detector effect treatment is crucial for collider reach estimates.

Abstract

The next generation of experiments in particle physics will for the first time systematically test flavor physics models based on flavon fields. Starting from the current quark-flavor constrains on such models we show how the new generation of lepton flavor experiments will dominate indirect searches in the coming decades. A future 100 TeV hadron collider will then be the first experiment to probe flavons as propagating degrees of freedom. Our estimate of the collider reach relies on a proper treatment of backgrounds and detector effects. Complementary searches for indirect effects in lepton flavor experiments and propagating degrees of freedom at colliders are very limited at the LHC, but will be a new feature at a 100 TeV hadron collider.