{
  "abstract": "The ALICE Collaboration has measured the azimuthal correlation between trigger isolated-prompt photons and associated charged hadrons in Pb$-$Pb collisions at the CERN LHC, at a centre-of-mass energy per nucleon pair of $\\sqrt{s_{\\rm NN}}~=~5.02$ TeV. The trigger isolated-prompt photons are measured in the transverse-momentum range $18<p_{\\rm T}^γ<40$ GeV/$c$ and pseudorapidity range $|η^γ| <0.67$. The isolation selection is based on a charged particle isolation momentum threshold $p_{\\rm T}^{\\rm iso,~ch} = 1.5$ GeV/$c$ within a cone of radius $R=0.2$. The yield D($z_{\\rm T}$) of associated hadrons per trigger, with $z_{\\rm T} = p_{\\rm T}^{\\rm h}/p_{\\rm T}^{\\rm γ}$, is measured in three Pb$-$Pb collision centrality classes: central (0$-$30%), semicentral (30$-$50%), and peripheral (50$-$90%). An approximation to the standard $I_{\\rm AA}$ is computed from the D($z_{\\rm T}$) conditional yields, using NLO pQCD predictions as pp reference, the $I_{\\rm pQCD}$. A strong suppression of this ratio is observed in central collisions compared to peripheral collisions. The result extends to a lower $p_{\\rm T}^γ$ relative to those reported in previously published Pb$-$Pb collisions measurements at $\\sqrt{s_{\\mathrm{NN}}}~=~5.02$ TeV. The $I_{\\rm pQCD}$ measurement is compared to $I_{\\rm AA}$ calculations with an NLO pQCD model that includes energy loss, and to the CoLBT-hydro model. The $I_{\\rm pQCD}$ results from central collisions are also compared with $I_{\\rm AA}$ measurements of jets correlated with isolated-prompt photons and of hadrons correlated with Z$^{0}$ bosons, both reported by the CMS Collaboration at the LHC, as well as with direct photon$-$hadron correlation $I_{\\rm AA}$ measurements reported by the PHENIX and STAR Collaborations at RHIC.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Eur. Phys. J. C 86, 1126 (2026)",
  "arxiv": "2605.02342",
  "author_total": 1,
  "authors": [
    {
      "name": "ALICE Collaboration"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e4a7hdn7g9cqf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.02342",
  "fulltext_url": null,
  "id": "e4a7hdn7g9cqf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.02342",
  "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",
      "nucl-ex"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.02342",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e4a7hdn7g9cqf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2605.02342",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.02342"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Measurement of isolated-prompt photon$-$hadron correlations in Pb$-$Pb collisions at $\\mathbf{\\sqrt{\\textit{s}_{\\rm NN}} = 5.02}$ TeV",
  "title_text": "Measurement of isolated-prompt photon−hadron correlations in Pb−Pb collisions at √(s_NN) = 5.02 TeV",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/e4a7hdn7g9cqf",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1140/epjc/s10052-026-16192-z",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}