{
  "abstract": "We investigate the hadronic contributions to the anomalous magnetic moment of the muon $$a_\\mu $$ in three representative infrared-improved soft-wall anti-de Sitter (AdS)/quantum chromodynamics (QCD) models, focusing on the leading-order hadronic vacuum polarization (LO-HVP) and hadronic light-by-light (HLbL) contributions. The model parameters are fixed by the ground-state $$\\rho $$-meson mass, pion mass, and pion decay constant, with the low-lying excited spectrum used as an additional phenomenological constraint. We find that the LO-HVP contribution remains below dispersive determinations, mainly because the $$\\rho $$-meson decay constant is underestimated. In the HLbL sector, the standard Chern–Simons term gives well-defined ground-state pseudoscalar-pole contributions but leads to divergent excited-state sums in soft-wall models. We therefore also adopt a scalar-extended Chern–Simons term motivated by brane–antibrane construction, which provides infrared suppression and allows finite estimates for pseudoscalar excitations and axial-vector mesons. The resulting HLbL predictions are internally convergent but still quantitatively model-dependent, showing that further refinement of the infrared completion and short-distance constraints is required.",
  "abstract_shown": true,
  "affiliations": [
    "Hunan University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jin-Yang Shen",
      "orcid": "0009-0008-1659-2676"
    },
    {
      "affs": [
        0
      ],
      "name": "Wen-Yuan Peng",
      "orcid": "0009-0005-2161-4153"
    },
    {
      "affs": [
        0
      ],
      "name": "Ling-Yun Dai",
      "orcid": "0000-0002-4070-4729"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhen Fang",
      "orcid": "0000-0001-9708-3823"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4xghydmefvvma.bib",
  "cited_by": 0,
  "doi": "10.1140/epjc/s10052-026-16431-3",
  "fulltext_url": null,
  "id": "4xghydmefvvma",
  "issns": [
    "1434-6052"
  ],
  "landing_url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16431-3",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "physics/high-energy"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16431-3.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/4xghydmefvvma.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:19Z",
      "native_id": "10.1140/epjc/s10052-026-16431-3",
      "source": "feed-springer",
      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16431-3"
    },
    {
      "first_seen": "2026-11-03T12:20:29Z",
      "native_id": "10.1140/epjc/s10052-026-16431-3",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16431-3"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "feed-journal:physics/high-energy",
      "subfield": "high-energy"
    }
  ],
  "title": "Hadronic vacuum polarization and light-by-light scattering in representative infrared-improved soft-wall holographic QCD models",
  "title_text": "Hadronic vacuum polarization and light-by-light scattering in representative infrared-improved soft-wall holographic QCD models",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T00:20:42Z",
  "url": "https://research.draconitic.com/paper/4xghydmefvvma",
  "venue": "The European Physical Journal C",
  "versions": []
}