FCC Physics and Experiments Note Submission

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Published March 11, 2025 | Version v1
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Searches for Heavy Neutral Leptons at FCC-ee in final states including a muon

Authors/Creators

  • 1. ROR icon INFN Sezione di Bologna
  • 2. ROR icon INFN Sezione di Pavia
  • 3. INFN, Sezione di Pavia

Description

Updated combined documentation of the HNL->mujj and HNL->mumunu analyses aiming at publication

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 decaymodes 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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Additional details

Funding

European Commission
FCCIS - Future Circular Collider Innovation Study 951754

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