Work

Cornering natural SUSY at a Tera-Z factory

Year: 2025

Type: article

Abstract: The future circular e + e − collider (FCC-ee) stands out as the next flagship project in particle physics, dedicated to uncovering the microscopic origin of the Higgs boson. In this context, we assess indirect probes of the Minimal Supersymmetric Standard Model (MSSM), a well-established benchmark hypothesis, exploring the complementarity between Higgs measurements and electroweak precision tests at the Z -pole. We study three key sectors: the heavy Higgs doublet, scalar top partners, and light gauginos and higgsinos, focusing on the parameter space favored by naturalness. Remarkably, the Tera- Z program consistently offers significantly greater indirect sensitivity than the Mega- h run. While promising, these prospects hinge on reducing SM uncertainties. Accordingly, we highlight key precision observables for targeted theoretical work.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.140009

Authors: Admir Greljo, Ben A. Stefanek, Alessandro Valenti

Institutions: University of Basel, Consejo Superior de Investigaciones Científicas, Instituto de Física Corpuscular

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Generalitat Valenciana, Mainz Institute for Theoretical Physics, Johannes Gutenberg University Mainz

Awards: Flavour Physics at the High Energy Frontier, G2946282769, G8448242396