{
  "abstract": "Exclusive $γγ\\to J/ψ+γ$ production is studied in the color-singlet channel at leading order in the heavy-quark velocity. The conventional next-to-leading-order (NLO) result $B+V$, comprising Born production and its interference with the renormalized one-loop amplitude, is compared with $B+V+Q$, where $Q$ retains the complete one-loop square. At photon-photon energies $W=80~\\mathrm{GeV}$ and $160~\\mathrm{GeV}$, the conventional spectrum becomes negative over finite high-$p_T$ intervals already at renormalization scale $μ_R=W$, whereas the complete square remains non-negative. In contrast, the total partonic cross section exceeds Born at the larger energies in the energy scan, owing to positive virtual contributions from other scattering directions. For $p$-$p$ collisions at $14~\\mathrm{TeV}$ and $Pb$-$Pb$ collisions at $\\sqrt{s_{NN}}=5.52~\\mathrm{TeV}$, $Q$ raises the central integrated ultraperipheral rates by $11.6\\%$--$18.4\\%$. Their absolute scale widths over $μ_R=\\{W/2,W,2W\\}$ decrease by $36\\%$--$67\\%$. Retaining the complete one-loop square changes both the predicted integrated rates and the shapes of the differential distributions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04293",
  "author_total": 3,
  "authors": [
    {
      "name": "Xi-Jie Zhan"
    },
    {
      "name": "Tai-Fu Feng"
    },
    {
      "name": "Xing-Gang Wu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0w3j8zq48abwh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04293",
  "fulltext_url": null,
  "id": "0w3j8zq48abwh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04293",
  "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"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7220709763",
  "pdf_url": "https://arxiv.org/pdf/2610.04293",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0w3j8zq48abwh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04293",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04293"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Amplitude-level NLO predictions for exclusive $J/ψ+γ$ production in ultraperipheral collisions",
  "title_text": "Amplitude-level NLO predictions for exclusive J/ψ+γ production in ultraperipheral collisions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/0w3j8zq48abwh",
  "venue": "arXiv",
  "versions": []
}