{
  "abstract": "We analyze the high-momentum tails of nucleon distributions in nuclei using the operator product expansion (OPE) and Pionless effective field theory. The OPE factorizes the distributions into Wilson coefficients, determined from two-nucleon scattering, and local-operator matrix elements (LOMEs). Because the leading ${{}^1S_0}$ and ${{}^3S_1}$ Wilson coefficients are nearly degenerate in the single-nucleon distribution, we construct the OPE of the two-nucleon momentum distribution, which separates the two contributions into distinct spin-isospin channels. From variational Monte Carlo two-nucleon distributions of \\isotope[3]{He}, \\isotope[4]{He}, \\isotope[6]{Li}, and \\isotope[12]{C}, we extract the LOMEs and accurately reconstruct the single-nucleon distributions at large momenta. In potentials without explicit non-nucleon degrees of freedom such as AV18, the Wilson coefficients of the single- and two-nucleon OPEs are proportional, yielding approximate relations between the two distributions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.08437",
  "author_total": 2,
  "authors": [
    {
      "name": "Jiexin Yu"
    },
    {
      "name": "Bingwei Long"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/84tchf3pehv85.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.08437",
  "fulltext_url": null,
  "id": "84tchf3pehv85",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.08437",
  "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-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7212051905",
  "pdf_url": "https://arxiv.org/pdf/2609.08437",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/84tchf3pehv85.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:49Z",
      "native_id": "2609.08437",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.08437"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Analyzing momentum distributions in light nuclei with the operator product expansion",
  "title_text": "Analyzing momentum distributions in light nuclei with the operator product expansion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:49Z",
  "url": "https://research.draconitic.com/paper/84tchf3pehv85",
  "venue": "arXiv",
  "versions": []
}