{
  "abstract": "We investigate direct and Higgs-mediated production of a Dirac heavy neutral lepton in a radiative neutrino-mass model at a future $3~\\mathrm{TeV}$ muon collider. We consider heavy neutral lepton masses in the window $m_Z<m_N<m_h$, where the decays $N\\to\\ell W$ and $N\\toνZ$ can proceed with on-shell weak bosons. We consider both direct production, $μ^+μ^-\\to Nν$, and Higgs-mediated production through $μ^+μ^-\\toν_μ\\barν_μh$, $h\\to Nν$. Both channels lead to the common $\\ell^\\pm jj+p_{\\mathrm T}^{\\mathrm{miss}}$ final state. We perform a detector-level analysis with an integrated luminosity of $1~\\mathrm{ab}^{-1}$, assuming unpolarized muon beams, and derive median expected $95\\%$ confidence-level upper limits on the visible signal cross section ranging from approximately $0.027$ to $0.113~\\mathrm{fb}$, corresponding to limits on the mixing strength parameter $|U_{μN}|^2$ ranging from $6.7\\times10^{-6}$ to $8.3\\times10^{-5}$ for six benchmark points. The Higgs-mediated production channel contributes $\\sim15$--$72\\%$ of the signal after the common event selection, but improves the expected limits by $\\sim0.18$--$1.19\\%$ within the common classifier and binning scheme. This small improvement reflects the classifier-score distribution of the Higgs-mediated events. The limits on $|U_{μN}|^2$ account for the benchmark-specific flavor mixings and assume an independent $10\\%$ background uncertainty in each classifier-score bin.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28252",
  "author_total": 4,
  "authors": [
    {
      "name": "Isaac Bamwidhi"
    },
    {
      "name": "Mohamed Belfkir"
    },
    {
      "name": "Mohamed Amin Loualidi"
    },
    {
      "name": "Salah Nasri"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/756vrvw8zrm1g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28252",
  "fulltext_url": null,
  "id": "756vrvw8zrm1g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28252",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7223093309",
  "pdf_url": "https://arxiv.org/pdf/2610.28252",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/756vrvw8zrm1g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.28252",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28252"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing a heavy neutral lepton in a radiative neutrino model at a muon collider",
  "title_text": "Probing a heavy neutral lepton in a radiative neutrino model at a muon collider",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/756vrvw8zrm1g",
  "venue": "arXiv",
  "versions": []
}