{
  "abstract": "We investigate the prospects for probing Lepton Flavor Violation (LFV) at FCC-ee within the Standard Model Effective Field Theory (SMEFT) framework. The approximately $2 \\times 10^{11}$ $τ$-lepton pairs expected at the $Z$-pole run of FCC-ee could improve current limits on the branching fractions of $τ\\to3\\ell$ and $τ\\to\\ellγ$ ($\\ell=e,μ$) by factors ranging from 30 to 800, depending on the specific channel. We compare the resulting new-physics reach with that obtained from searches for $Z \\to τ\\ell$ and $h \\to τ\\ell$, which have so far received greater attention in studies of LFV at future $e^+e^-$ colliders. We find that $τ$ decays can surpass both the current and the projected sensitivity of $Z\\toτ\\ell$ searches to the same LFV interactions, while probing a broader range of SMEFT operators. We further show that, for LFV Yukawa-like interactions, direct searches for $h\\toτ\\ell$ provide the strongest sensitivity. By contrast, for semileptonic operators that radiatively induce LFV Higgs decays, this hierarchy can be reversed, with $τ$ decays providing the leading probe.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27057",
  "author_total": 10,
  "authors": [
    {
      "name": "L. Allwicher"
    },
    {
      "name": "R. Bartocci"
    },
    {
      "name": "M. Cepeda"
    },
    {
      "name": "C. Cornella"
    },
    {
      "name": "L. P. S. Leal"
    },
    {
      "name": "A. Lusiani"
    },
    {
      "name": "C. Martin Perez"
    },
    {
      "name": "P. Paradisi"
    },
    {
      "name": "E. Scantamburlo"
    },
    {
      "name": "O. Sumensari"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/aqc5638zxp6pg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27057",
  "fulltext_url": null,
  "id": "aqc5638zxp6pg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27057",
  "language": "en",
  "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": [
    [
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      "hep-ex"
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      "3106|Particle physics theoretical and experimental studies"
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  "openalex": "W7223142354",
  "pdf_url": "https://arxiv.org/pdf/2610.27057",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/aqc5638zxp6pg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27057",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27057"
    },
    {
      "first_seen": "2026-11-04T12:20:52Z",
      "native_id": "hal-05850136",
      "source": "hal",
      "url": "https://hal.science/hal-05850136v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing Lepton Flavor Violation at FCC-ee",
  "title_text": "Probing Lepton Flavor Violation at FCC-ee",
  "type": "preprint",
  "updated_at": "2026-11-05T12:20:12Z",
  "url": "https://research.draconitic.com/paper/aqc5638zxp6pg",
  "venue": "arXiv",
  "versions": []
}