{
  "abstract": "Revealing the space-time evolution of the quark-gluon plasma created in heavy-ion collisions is a central challenge, as this information is encoded in the properties of particles emitted at freeze-out. We reconstruct the pion emission source in Au+Au collisions at sqrt(s_NN) = 200 GeV (0-5% centrality), simulated with the vHLLE+SMASH hybrid framework, which combines a Glauber Monte Carlo initial state, (3+1)-dimensional viscous hydrodynamics, and a hadronic afterburner describing resonance decays and hadronic rescattering. Hanbury Brown-Twiss (HBT) interferometry is used to characterize identical-pion pair sources, which can also be reconstructed directly from the last scattering points of final-state particles in simulations. The projected pair-separation distributions in the Bertsch-Pratt out, side, and long directions are analyzed using a three-dimensional Levy-stable parameterization. Over the investigated fit range, extending to approximately 100 fm, a single Levy-stable function provides a satisfactory description of the distributions. The extracted Levy index, alpha approximately 1.5-1.6, is below the Gaussian value of 2 and increases slowly with transverse mass mT. At larger pair separations, the total source deviates from the fitted distribution, consistent with a halo contribution from long-lived resonance decays. Short-lived resonance decays and hadronic rescattering may contribute to the non-Gaussian shape through the Levy-walk phenomenon. The HBT radii Rout, Rside, and Rlong decrease with mT, qualitatively consistent with collective expansion. These results demonstrate the utility of Levy-stable femtoscopy for connecting hadronic-stage dynamics in hybrid simulations with experimentally accessible observables.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.34612",
  "author_total": 2,
  "authors": [
    {
      "name": "Zeinab A. Abdelrazik"
    },
    {
      "name": "Máté Csanád"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/afdj71smvvc4h.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.34612",
  "fulltext_url": null,
  "id": "afdj71smvvc4h",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.34612",
  "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"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|High-Energy Particle Collisions Research"
    ]
  ],
  "openalex": "W7223987594",
  "pdf_url": "https://arxiv.org/pdf/2610.34612",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/afdj71smvvc4h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.34612",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.34612"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Lévy-stable pion emission sources in Au+Au collisions at $\\sqrt{s_{\\rm NN}}=200$ GeV from the vHLLE+SMASH hybrid model",
  "title_text": "Lévy-stable pion emission sources in Au+Au collisions at √(s_NN)=200 GeV from the vHLLE+SMASH hybrid model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/afdj71smvvc4h",
  "venue": "arXiv",
  "versions": []
}