{
  "abstract": "We study the weak magnetic and electric dipole moments of the $τ$ lepton as precision tests of the Standard Model (SM) and probes of heavy New Physics (NP). We present an updated SM prediction for the $τ$ weak magnetic dipole moment at one loop, including a careful assessment of theoretical uncertainties from electroweak scheme dependence. Working within the SM Effective Field Theory, we derive comprehensive current constraints on the $τ$ dipole operators from a combination of observables: the $τ$ weak and electromagnetic dipole moments, high-mass Drell-Yan tails at the LHC, $Z$ partial decay widths, and the electron electric dipole moment. Finally, we assess the prospects of measuring the SM value of the $τ$ weak magnetic moment at the FCC-$ee$ Tera-$Z$ run, and project the sensitivities of the leading observables to heavy NP at FCC-$ee$ and HL-LHC, incorporating informed assumptions about improvements of systematic uncertainties. We find that the $τ$ weak dipole moments are already among the leading probes of the $τ$ dipole operators, and will become increasingly dominant at future colliders.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.07232",
  "author_total": 3,
  "authors": [
    {
      "name": "Nejc Košnik"
    },
    {
      "name": "Zachary Polonsky"
    },
    {
      "name": "Aleks Smolkovič"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e7gbenmjybkyr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.07232",
  "fulltext_url": null,
  "id": "e7gbenmjybkyr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.07232",
  "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/2606.07232",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e7gbenmjybkyr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2606.07232",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.07232"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Current and future constraints on heavy New Physics from $τ$ weak dipole moments",
  "title_text": "Current and future constraints on heavy New Physics from τ weak dipole moments",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/e7gbenmjybkyr",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1007/jhep09(2026)129",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}