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arXiv · 2401.12278

Early Matter Domination at Colliders: Long Live the Glueball!

Fady Bishara·Filippo Sala·Kai Schmidt-Hoberg
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Abstract

We prove that collider searches for long-lived particles (LLPs) can test the dynamics responsible for matter domination in the early universe. In this letter we concentrate on the specific example of glueballs from a GeV-scale confining dark sector and compute the dilution of cosmological relics induced by their decay. We then show that searches for long-lived glueballs from Higgs decays test increasing values of dilution at ATLAS and CMS, CODEX-b, ANUBIS and MATHUSLA. We identify the general features that make models of early matter domination discoverable via LLPs at colliders. Our study provides a quantitative physics motivation to test longer lifetimes.

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Fady Bishara, Filippo Sala, Kai Schmidt-Hoberg. 2024-01-22. Early Matter Domination at Colliders: Long Live the Glueball!. https://arxiv.org/abs/2401.12278

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