{
  "abstract": "Prompt $J/ψ$ hadroproduction poses two related puzzles: fixed-order hadronic and $e^+e^-$ analyses give incompatible constraints on the same color-octet (CO) long-distance matrix element (LDME) combination, and the weak observed polarization is difficult to reproduce together with the yield. We analyze high-$p_T$ production in the fragmentation-function formalism with leading-logarithmic threshold resummation in both nonrelativistic QCD (NRQCD) and soft-gluon factorization (SGF). Combining the resummed hadroproduction fit with bounds from resummed $e^+e^-$ production, we find in both frameworks a common LDME region satisfying the two constraints simultaneously: threshold resummation resolves the universality tension present at fixed order. There, the $^{1}S_{0}^{[8]}$ contribution is small and the yield is governed by the $^{3}S_{1}^{[8]}$ and $^{3}P_{J}^{[8]}$ channels, whose leading transverse contributions largely cancel. The cancellation amplifies spin-symmetry-breaking transitions in the $^{3}S_{1}^{[8]}$ channel, so that within a one-parameter spin-flip ansatz a contribution of natural order $v^4$ accommodates both the measured yields and the weak polarization. A similar sensitivity holds for $ψ(2S)$ production.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.24674",
  "author_total": 3,
  "authors": [
    {
      "name": "An-Ping Chen"
    },
    {
      "name": "Jun Guo"
    },
    {
      "name": "Yan-Qing Ma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9aqpy6r13a1yh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.24674",
  "fulltext_url": null,
  "id": "9aqpy6r13a1yh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.24674",
  "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": "W7214001515",
  "pdf_url": "https://arxiv.org/pdf/2609.24674",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9aqpy6r13a1yh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.24674",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.24674"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Resolving the universality and polarization puzzles in $J/ψ$ hadroproduction",
  "title_text": "Resolving the universality and polarization puzzles in J/ψ hadroproduction",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/9aqpy6r13a1yh",
  "venue": "arXiv",
  "versions": []
}