Cornering Natural SUSY at a Tera-$Z$ Factory

Fuente: arXiv
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Auteurs principaux: Greljo, Admir, Stefanek, Ben A., Valenti, Alessandro
Format: Preprint
Publié: 2025
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author Greljo, Admir
Stefanek, Ben A.
Valenti, Alessandro
author_facet Greljo, Admir
Stefanek, Ben A.
Valenti, Alessandro
contents 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.
format Preprint
id arxiv_https___arxiv_org_abs_2507_03073
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Cornering Natural SUSY at a Tera-$Z$ Factory
Greljo, Admir
Stefanek, Ben A.
Valenti, Alessandro
High Energy Physics - Phenomenology
High Energy Physics - Experiment
High Energy Physics - Theory
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.
title Cornering Natural SUSY at a Tera-$Z$ Factory
topic High Energy Physics - Phenomenology
High Energy Physics - Experiment
High Energy Physics - Theory
url https://arxiv.org/abs/2507.03073