Global fits of SUSY at future Higgs factories

TL;DR

This paper evaluates how future electron-positron colliders can test and distinguish various supersymmetric models through precision Higgs and electroweak measurements, enhancing our understanding of dark matter and SUSY parameter space.

Contribution

It provides a comprehensive analysis of the discovery potential of future Higgs factories for different SUSY models using updated global fit data.

Findings

Future colliders will significantly constrain SUSY parameter space.

Precise Higgs measurements can differentiate dark matter annihilation mechanisms.

Current SUSY models remain viable but will be more tested by upcoming experiments.

Abstract

In this work, we study the impact of electroweak and Higgs precision measurements at future electron-positron colliders on several typical supersymmetric models, including the Constrained Minimal Supersymmetric Standard Model (CMSSM), Non-Universal Higgs Mass generalisations (NUHM1, NUHM2), and the 7-dimensional Minimal Supersymmetric Standard Model (MSSM7). Using publicly-available data from the \textsf{GAMBIT} community, we post-process previous SUSY global fits with additional likelihoods to explore the discovery potential of Higgs factories, such as the Circular Electron Positron Collider (CEPC), the Future Circular Collider (FCC) and the International Linear Collider (ILC). We show that the currently allowed parameter space of these models will be further tested by future precision measurements. In particular, dark matter annihilation mechanisms may be distinguished by precise measurements of Higgs observables.