Supersymmetry versus Compositeness: 2HDMs tell the story

TL;DR

This paper explores how 2-Higgs Doublet Models (2HDMs) can be used at the LHC to distinguish between Supersymmetry and Compositeness, two theories addressing the hierarchy problem and predicting a light Higgs.

Contribution

It demonstrates that the spectra of 2HDMs accessible at the LHC can serve as a diagnostic tool to differentiate Supersymmetry from Compositeness.

Findings

2HDM spectra vary distinctly between the two theories.

LHC measurements can potentially identify the underlying paradigm.

The study provides specific signatures to distinguish the models.

Abstract

Supersymmetry and Compositeness are two prevalent paradigms providing both a solution to the hierarchy problem and a motivation for a light Higgs boson state. As the latter has now been found, its dynamics can hold the key to disentangle the two theories. An open door towards the solution is found in the context of 2-Higgs Doublet Models (2HDMs), which are necessary to Supersymmetry and natural within Compositeness in order to enable Electro-Weak Symmetry Breaking. We show how 2HDM spectra of masses and couplings accessible at the Large Hadron Collider may allow one to separate the two scenarios.