{
  "abstract": "Near-threshold $J/ψ$ photoproduction has been used to infer scalar gluonic structure from integrated cross-section data. We test whether such an inference is stable against the assumed non-forward continuation of the OPE kernel. With an exponential diffractive slope fixed, the threshold fit favors an additional scalar $G_S(t)$-like contribution. However, the residuals show a systematic $W$-dependent trend. When either the effective slope or the kernel shape is replaced by a physically motivated form-factor continuation, the trend disappears and the fitted scalar coefficient is driven to zero. Thus integrated $σ(W)$ data cannot determine the non-forward OPE kernel or isolate a scalar $G_S(t)$ contribution. Differential $dσ/dt$ data are required.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.10803",
  "author_total": 1,
  "authors": [
    {
      "name": "A. I. Syamtomov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/afentg7ztjjcw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.10803",
  "fulltext_url": null,
  "id": "afentg7ztjjcw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.10803",
  "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-ph"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7160949623",
  "pdf_url": "https://arxiv.org/pdf/2605.10803",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/afentg7ztjjcw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2605.10803",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.10803"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Non-Forward OPE Kernel versus Scalar Form Factor in Near-Threshold $J/ψ$ Photoproduction",
  "title_text": "Non-Forward OPE Kernel versus Scalar Form Factor in Near-Threshold J/ψ Photoproduction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/afentg7ztjjcw",
  "venue": "arXiv",
  "versions": []
}