{
  "abstract": "We present a lattice-QCD calculation of the leading-order hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon in isospin-symmetric QCD. We employ the gauge configurations generated by the Extended Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ flavors of Wilson-clover twisted-mass quarks at four lattice spacings and at values of the quark-mass parameters matching the definition of isospin-symmetric QCD given in the FLAG review 2024 and in the 2025 edition of the Muon $g-2$ Theory Initiative White Paper (WP25). After retuning the simulation parameters to precisely match these two definitions of isospin-symmetric QCD, and after carrying out an extrapolation to the continuum limit based on the data at lattice spacings $a \\simeq 0.049, 0.057, 0.068$ and $0.079$~fm, and spatial lattice sizes up to $L \\simeq 7.7$~fm, we obtain $a_μ^{\\rm HVP, FLAG}(\\rm{iso}) = (720.0 \\pm 6.9) \\times 10^{-10}$ and $a_μ^{\\rm HVP, WP25}(\\rm{iso}) = (714.8 \\pm 7.4) \\times 10^{-10}$. Our results, which have a relative uncertainty of about $1 \\%$, agree well with the corresponding determinations by other lattice groups. After adding to our determination of $a_μ^{\\rm HVP, WP25}(\\rm{iso})$ the leading isospin-breaking corrections provided in the WP25, namely $a_μ^{\\rm HVP, WP25}({\\rm IB}) = 0.1(3.4)\\times 10^{-10}$, we obtain for the full HVP the value $a_μ^{\\rm HVP}= (714.9 \\pm 8.1)\\times 10^{-10}$. This result translates into a Standard Model prediction for the muon anomalous magnetic moment that is fully consistent with the latest result by the Fermilab Muon $g-2$ experiment and strengthens the tension between lattice QCD and data-driven (pre-CMD3) dispersive determinations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.22224",
  "author_total": 21,
  "authors": [
    {
      "name": "C. Alexandrou"
    },
    {
      "name": "S. Bacchio"
    },
    {
      "name": "A. De Santis"
    },
    {
      "name": "A. Evangelista"
    },
    {
      "name": "J. Finkenrath"
    },
    {
      "name": "R. Frezzotti"
    },
    {
      "name": "G. Gagliardi"
    },
    {
      "name": "M. Garofalo"
    },
    {
      "name": "N. Kalntis"
    },
    {
      "name": "B. Kostrzewa"
    },
    {
      "name": "V. Lubicz"
    },
    {
      "name": "L. Maio"
    },
    {
      "name": "F. Margari"
    },
    {
      "name": "F. Pittler"
    },
    {
      "name": "S. Romiti"
    },
    {
      "name": "F. Sanfilippo"
    },
    {
      "name": "C. Schneider"
    },
    {
      "name": "S. Simula"
    },
    {
      "name": "N. Tantalo"
    },
    {
      "name": "C. Urbach"
    },
    {
      "name": "U. Wenger"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1maa4mkcm3wbh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.22224",
  "fulltext_url": null,
  "id": "1maa4mkcm3wbh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.22224",
  "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-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7222521706",
  "pdf_url": "https://arxiv.org/pdf/2610.22224",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1maa4mkcm3wbh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.22224",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.22224"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    }
  ],
  "title": "The hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment in isospin-symmetric lattice QCD with twisted-mass fermions",
  "title_text": "The hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment in isospin-symmetric lattice QCD with twisted-mass fermions",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:50Z",
  "url": "https://research.draconitic.com/paper/1maa4mkcm3wbh",
  "venue": "arXiv",
  "versions": []
}