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arXiv · 2503.19464

Searches for Heavy Neutral Leptons at FCC-ee in final states including a muon

L Bellagamba·G Polesello·N. Valle
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Abstract

The sensitivity of the CERN FCC-ee collider to the production of heavy neutral leptons (HNL) is investigated. The study focuses on a simplified model with a single low-mass HNL mixing with a muon, and addresses the fully leptonic and semileptonic decay modes of the HNL. Complete Monte Carlo analyses of signal and background based on a parametrised detector simulation are performed for the FCC-ee run at the $Z$-pole, resulting in an estimate of the intervals of the mixing parameter for which the FCC-ee will have a 95% CL sensitivity as a function of the HNL mass.

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L Bellagamba, G Polesello, N. Valle. 2025-03-25. Searches for Heavy Neutral Leptons at FCC-ee in final states including a muon. https://doi.org/10.1140/epjc%2Fs10052-025-14749-y

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