{
  "abstract": "We report on the differential cross sections d σ /d t , the unpolarized spin-density matrix elements ρ 00 0 , ρ 1 − 1 0 , Re ρ 10 0 , and the first extraction of the polarized elements Im ρ 10 3 , Im ρ 1 − 1 3 for the reaction γp → pω using the CLAS spectrometer at Jefferson Laboratory. The ω mesons were detected in their dominant charged decay mode, ω → π + π − π 0 , and all t -dependent results are presented in a fine binning for incident photon energies between 2.73 and 5.16 GeV (corresponding to the center-of-mass energy range W ∈ [ 2.45, 3.25 ] GeV). All matrix elements are first measurements for − t > 0.6 GeV 2 . Moreover, differential cross sections d σ /d(cos Θ c . m . ω ) and the corresponding angle-dependent unpolarized spin-density matrix elements in the Adair frame are presented for the incident photon energy range 1.56–3.80 GeV (corresponding to W ∈ [ 1.95, 2.83 ] GeV). These new ω photoproduction data are consistent with earlier CLAS results but extend the energy range well beyond the nucleon resonance region into the Regge regime. The comparison with Regge-theory-based model predictions shows that the new data impose more stringent constraints on our understanding of ω photoproduction.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.11467",
  "author_total": 150,
  "authors": [
    {
      "name": "T Hu"
    },
    {
      "name": "Z Akbar"
    },
    {
      "name": "V Crede"
    },
    {
      "name": "J.M Laget"
    },
    {
      "name": "V Mathieu"
    },
    {
      "name": "M.J Amaryan"
    },
    {
      "name": "W.R Armstrong"
    },
    {
      "name": "H Atac"
    },
    {
      "name": "N.A Baltzell"
    },
    {
      "name": "L Barion"
    },
    {
      "name": "M Battaglieri"
    },
    {
      "name": "I Bedlinskiy"
    },
    {
      "name": "B Benkel"
    },
    {
      "name": "F Benmokhtar"
    },
    {
      "name": "A Bianconi"
    },
    {
      "name": "L Biondo"
    },
    {
      "name": "A Biselli"
    },
    {
      "name": "M Bondi"
    },
    {
      "name": "F Bossù"
    },
    {
      "name": "S Boiarinov"
    },
    {
      "name": "W.J Briscoe"
    },
    {
      "name": "S Bueltmann"
    },
    {
      "name": "D Bulumulla"
    },
    {
      "name": "V.D Burkert"
    },
    {
      "name": "R Capobianco"
    },
    {
      "name": "D.S Carman"
    },
    {
      "name": "J.C Carvajal"
    },
    {
      "name": "A Celentano"
    },
    {
      "name": "T Chetry"
    },
    {
      "name": "G Ciullo"
    },
    {
      "name": "G Clash"
    },
    {
      "name": "P.L Cole"
    },
    {
      "name": "M Contalbrigo"
    },
    {
      "name": "G Costantini"
    },
    {
      "name": "A d'Angelo"
    },
    {
      "name": "N Dashyan"
    },
    {
      "name": "R de Vita"
    },
    {
      "name": "M Defurne"
    },
    {
      "name": "A Deur"
    },
    {
      "name": "S Diehl"
    },
    {
      "name": "C Djalali"
    },
    {
      "name": "R Dupre"
    },
    {
      "name": "H Egiyan"
    },
    {
      "name": "A El Alaoui"
    },
    {
      "name": "L El Fassi"
    },
    {
      "name": "L Elouadrhiri"
    },
    {
      "name": "P Eugenio"
    },
    {
      "name": "S Fegan"
    },
    {
      "name": "A Filippi"
    },
    {
      "name": "G Gavalian"
    },
    {
      "name": "Y Ghandilyan"
    },
    {
      "name": "G.P Gilfoyle"
    },
    {
      "name": "F Girod"
    },
    {
      "name": "A.A Golubenko"
    },
    {
      "name": "G Gosta"
    },
    {
      "name": "R.W Gothe"
    },
    {
      "name": "K.A Griffioen"
    },
    {
      "name": "M Guidal"
    },
    {
      "name": "K Hafidi"
    },
    {
      "name": "H Hakobyan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/da0gcyssm8mbg.bib",
  "cited_by": 0,
  "doi": "10.1016/j.physletb.2026.140845",
  "fulltext_url": null,
  "id": "da0gcyssm8mbg",
  "issns": [
    "0370-2693",
    "1873-2445"
  ],
  "landing_url": "https://hal.science/hal-05733757v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
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      "hal",
      "1.phys.hexp"
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    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
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  "openalex": "W7202268840",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/da0gcyssm8mbg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "hal-05733757",
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      "url": "https://hal.science/hal-05733757v1"
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  "subjects": [
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      "field": "physics",
      "origin": "hal:1.phys.hexp",
      "subfield": "high-energy"
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    {
      "field": "physics",
      "origin": "hal:1.phys.nexp",
      "subfield": "nuclear"
    }
  ],
  "title": "First measurement of polarized spin-density matrix elements and differential cross sections dσ/dt in ω photoproduction off the proton for 2.7 < Eγ < 5.2 GeV using CLAS at Jefferson Lab",
  "title_text": "First measurement of polarized spin-density matrix elements and differential cross sections dσ/dt in ω photoproduction off the proton for 2.7 < Eγ < 5.2 GeV using CLAS at Jefferson Lab",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/da0gcyssm8mbg",
  "venue": "Physics Letters B",
  "versions": []
}