{
  "abstract": "The sensitivity of the FCC-hh to the anomalous magnetic moment $a_τ$ and the electric dipole moment $d_τ$ of the $τ$ lepton is studied in photon-induced $γγ\\toτ^+τ^-$ production with both $τ$ leptons decaying hadronically. Central exclusive (elastic) signal events, in which both protons remain intact, are generated with MadGraph5_aMC@NLO using a FeynRules UFO model of the anomalous $γττ$ vertex merged with the TauDecay model, so that the $τ$ decays and their spin correlations are included in the matrix element. Single- and double-dissociative production is estimated with SuperChic and added to the elastic signal with its own coupling dependence and with normalisation and shape uncertainties of 25%. Pythia 8 decays the unstable hadrons in the signal, decays the $τ$ leptons and simulates the parton shower and hadronisation in the backgrounds, and hadronises the dissociated protons. Signal and backgrounds are passed through the Delphes simulation of the FCC-hh detector. Hadronic $τ$ decays are reconstructed from particle-flow tracks and photons with an algorithm based on the hadrons-plus-strips approach, with an efficiency of 73.4% within the acceptance. Requiring no additional tracks from the $τ$ vertices retains part of the dissociative contribution and reduces the Drell-Yan and $γγ\\to WW$ backgrounds to 0.9% of the SM yield. The couplings are constrained from the shape of the total transverse mass distribution. For a centre-of-mass energy of 84 TeV and 30 ab$^{-1}$, the expected 95% CL limits are $-3.38\\times10^{-4} < a_τ< 3.36\\times10^{-4}$ and $|d_τ| < 1.88\\times10^{-18}\\,e\\,$cm, about an order of magnitude beyond the current bounds. Results are also given for FCC-hh scenarios between 72 and 120 TeV and for an optimistic detector parametrisation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28147",
  "author_total": 3,
  "authors": [
    {
      "name": "A. Senol"
    },
    {
      "name": "H. Denizli"
    },
    {
      "name": "M. Köksal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fqmzhw0htdg1t.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28147",
  "fulltext_url": null,
  "id": "fqmzhw0htdg1t",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28147",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7223103224",
  "pdf_url": "https://arxiv.org/pdf/2610.28147",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fqmzhw0htdg1t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.28147",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28147"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing the $τ$ anomalous magnetic and electric dipole moments in photon-induced $γγ\\toτ^+τ^-$ production at the FCC-hh",
  "title_text": "Probing the τ anomalous magnetic and electric dipole moments in photon-induced γγ→τ^+τ^- production at the FCC-hh",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/fqmzhw0htdg1t",
  "venue": "arXiv",
  "versions": []
}