{
  "abstract": "The proton's unpolarized $u(x)-d(x)$ parton distribution function (PDF) has been studied by a number of lattice QCD groups through large momentum expansion. However, due to lattice artifacts (excited state contaminations, unphysical pion masses, and discretization effects) and less-advanced theoretical analysis (renormalizations, large-distance extrapolations, and large-log resummations), the resulting PDFs cannot be compared strictly with experimental data. By using the state-of-the-art theoretical tools and mitigating the lattice artifacts empirically, we reanalyze the available datasets in the literature and find that the new PDF for the physical-limit-extrapolated dataset (MSULat20) is consistent with global fits within $\\sim1σ$, while others are broadly compatible. This provides evidence that large momentum expansion is capable of accurately predicting the $x$-dependence of the PDFs when ideal lattice data become available.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Lett. 137, 161901 (2026)",
  "arxiv": "2606.22224",
  "author_total": 2,
  "authors": [
    {
      "name": "Xiangdong Ji"
    },
    {
      "name": "Yushan Su"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/67j97bgmmc5gy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.22224",
  "fulltext_url": null,
  "id": "67j97bgmmc5gy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.22224",
  "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-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.22224",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/67j97bgmmc5gy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2606.22224",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.22224"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Proton's isovector PDF with updated analysis of large-momentum lattice data",
  "title_text": "Proton's isovector PDF with updated analysis of large-momentum lattice data",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:31Z",
  "url": "https://research.draconitic.com/paper/67j97bgmmc5gy",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/8ytm-zbf4",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}