{
  "abstract": "We study exclusive diffractive electroproduction of the $ρ^0$, $ϕ$, $J/ψ$, and $ψ(2S)$ mesons in the color-dipole picture using two spin-orbit light-front wave functions, S-1 and S-2. S-1 follows from the Melosh--Wigner rotation in the light-front quark model (LFQM), while S-2 is the spin-improved form commonly used in holographic and boosted-Gaussian approaches. Both share the same radial wave function, with their parameters determined from the LFQM Hamiltonian. The color-glass-condensate dipole parameters are fixed from inclusive structure-function data, with no fit to diffractive data. We compare the predictions with measurements of cross sections, $R=σ_L/σ_T$, $t$ and $W$ dependences, and $σ_ϕ/σ_ρ$. S-1 gives a better description of the light-meson observables, while S-2 provides a better description of the charmonium ratio $σ_{ψ(2S)}/σ_{J/ψ}$ and the $J/ψ$ decay constant. We also present the charge, magnetic, and quadrupole form factors of the four mesons and compare them with available lattice-QCD results.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.39647",
  "author_total": 1,
  "authors": [
    {
      "name": "Satyajit Puhan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8de5bccrsqc69.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.39647",
  "fulltext_url": null,
  "id": "8de5bccrsqc69",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.39647",
  "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": "W7215028489",
  "pdf_url": "https://arxiv.org/pdf/2609.39647",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8de5bccrsqc69.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:49Z",
      "native_id": "2609.39647",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.39647"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Diffractive Vector-Meson Production from the Light-Front Quark Model",
  "title_text": "Diffractive Vector-Meson Production from the Light-Front Quark Model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:49Z",
  "url": "https://research.draconitic.com/paper/8de5bccrsqc69",
  "venue": "arXiv",
  "versions": []
}