Flavour and Higgs compositeness: present and "near" future

TL;DR

This paper discusses how flavor physics can serve as a crucial tool for beyond Standard Model searches, especially in probing the compositeness of the Higgs boson as a Pseudo-Nambu-Goldstone Boson at future colliders.

Contribution

It provides a minimal sensitivity estimate on the compositeness scale of the Higgs using flavor physics, considering specific models and their implications.

Findings

Flavor physics can probe Higgs compositeness at high scales.

Estimated sensitivity on the compositeness scale $m_*$ is provided.

Highlights the importance of flavor observables in future collider searches.

Abstract

Flavour physics, from now up to the operation of the next high energy collider, will be an important tool for BSM searches at the TeV scale. Although far from exhaustive, a particularly relevant case is represented by the possibility that the Higgs be a composite Pseudo-Nambu-Goldstone-Boson (PNGB) at a scale $l_H=1/m_*$. While a totally model-independent assessment of the potential of flavour physics in this case is impossible, here we illustrate what is likely to be a minimal sensitivity on $m_*$ by considering suitable examples.\