{
  "abstract": "We investigate the projected sensitivity of the FCC-ee in probing the LFV decay of the 125 GeV Higgs boson, $h\\toμτ$, $h\\to eτ$, and $h \\to eμ$ at center-of-mass energy of 240 GeV with an integrated luminosity of 5 ab$^{-1}$. With the clean multi-lepton final states, we consider the Higgs production modes that contribute to $e^+e^- \\to \\ell\\ell h$, in particular, the Higgs-strahlung and the vector boson fusion production channels. The 95\\% CL upper limits on branching ratio are found to be $5.94 \\times 10^{-4}$, $6.28 \\times 10^{-4}$, and $7.37 \\times 10^{-5}$ for the channels $h\\toμτ$, $h\\to eτ$, and $h \\to eμ$, respectively. In addition, we also consider the LFV decay of a new CP-even Higgs boson with mass in the range of $110-200$ GeV. The projected FCC-ee sensitivities are then compared to those from low energy searches for $\\ell\\to\\ell'γ$ decay. We find that the FCC-ee sensitivity for the LFV decays of the Higgs in the $e-τ$ and $μ-τ$ channels is superior to the low-energy constraints. However, in the $e-μ$ case, the low energy search offers stronger constraints.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. D 114 (2026) 075026",
  "arxiv": "2605.30971",
  "author_total": 5,
  "authors": [
    {
      "name": "P. Sriling"
    },
    {
      "name": "N. Srimanobhas"
    },
    {
      "name": "P. Uttayarat"
    },
    {
      "name": "R. Uttho"
    },
    {
      "name": "V. Wachirapusitanand"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/275rztyj6kfc9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.30971",
  "fulltext_url": null,
  "id": "275rztyj6kfc9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.30971",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.30971",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/275rztyj6kfc9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2605.30971",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.30971"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Searching for Lepton Flavor Violating decays of the Higgs Boson into $μτ$, $eτ$, and $eμ$ final states at FCC-ee",
  "title_text": "Searching for Lepton Flavor Violating decays of the Higgs Boson into μτ, eτ, and eμ final states at FCC-ee",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/275rztyj6kfc9",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/hs3z-6tnr",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}