{
  "abstract": "We consider elastic vector meson production in longitudinally polarized electron-proton collisions at small $x$. Inspired by previous pioneering proposals in the literature, we calculate the numerator of the longitudinal double-spin asymmetry (DSA) within the polarized small-$x$ formalism for both the transversely and longitudinally polarized vector mesons. Our calculation demonstrates that the $\\cosϕ_{kΔ}$ azimuthal harmonic of the DSA for the elastic vector meson production at small transverse momentum transfer (with $ϕ_{kΔ}$ the azimuthal angle between the transverse momenta of the outgoing electron and meson in the dipole/Trento frame) provides a promising probe of the orbital angular momentum (OAM) distributions at small $x$. Our results can be applied to several different vector meson species, thus opening up a new class of observables that can be used to extract OAM distributions from experimental data.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.33255",
  "author_total": 2,
  "authors": [
    {
      "name": "Yuri V. Kovchegov"
    },
    {
      "name": "Brandon Manley"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8ns8s6cbffyxs.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.33255",
  "fulltext_url": null,
  "id": "8ns8s6cbffyxs",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.33255",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-ex"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7223833388",
  "pdf_url": "https://arxiv.org/pdf/2610.33255",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8ns8s6cbffyxs.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.33255",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.33255"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Probing Orbital Angular Momentum Distributions in Elastic Vector Meson Production in Longitudinally Polarized Electron--Proton Scattering",
  "title_text": "Probing Orbital Angular Momentum Distributions in Elastic Vector Meson Production in Longitudinally Polarized Electron--Proton Scattering",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/8ns8s6cbffyxs",
  "venue": "arXiv",
  "versions": []
}