{
  "abstract": "We present updated lattice quantum chromodynamics (QCD) results for the unpolarized nucleon gluon parton distribution function (PDF) using the pseudo-PDF methodology. The calculation is performed at valence pion masses $M_π\\approx 310$ and $690$ MeV on an $a \\approx 0.06$ fm ensemble with $2+1+1$ flavors of highly improved staggered quarks (HISQ) generated by the MILC Collaboration. This lattice spacing is finer than those used in previous gluon pseudo-PDF studies, providing access to multiple short-distance separations and nucleon boost momenta as high as $4.4$ GeV. To control excited-state contamination and reduce model dependence, we employ the recently developed Lanczos method, finding good agreement with our previous two-state fit approach. Higher-twist contributions and discretization effects are accounted for through explicit parameterizations in fits to the renormalized short-distance matrix elements. Together, these advances represent important steps toward systematically controlled, high-precision extractions of the gluon PDF. The resulting PDFs exhibit no statistically significant dependence on the valence pion mass and indicate a strongly suppressed gluon distribution at large $x$, consistent with a subset of phenomenological PDF extractions. These results demonstrate progress toward providing systematically controlled lattice-QCD constraints for future global PDF analyses.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31597",
  "author_total": 4,
  "authors": [
    {
      "name": "Alex NieMiera"
    },
    {
      "name": "Kai Ebira"
    },
    {
      "name": "William Good"
    },
    {
      "name": "Huey-Wen Lin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0qaffeayh92tf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31597",
  "fulltext_url": null,
  "id": "0qaffeayh92tf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31597",
  "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"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7223324947",
  "pdf_url": "https://arxiv.org/pdf/2610.31597",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0qaffeayh92tf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.31597",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31597"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    }
  ],
  "title": "Towards Systematic Control of the Nucleon Gluon PDF with the Pseudo-PDF Method",
  "title_text": "Towards Systematic Control of the Nucleon Gluon PDF with the Pseudo-PDF Method",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/0qaffeayh92tf",
  "venue": "arXiv",
  "versions": []
}