{
  "annotation_id": "ccdc75e1-5023-4cd9-8380-246840d14981",
  "date_created": "2026-03-02T18:00:01.607000Z",
  "date_modified": "2026-03-02T18:00:01.607000Z",
  "file_hash": "0bb2450f6ab63e8756ebb435de484608a505629a0ab13aa9573173549358c8ca",
  "private": false,
  "record": {
    "abstract": "In this PhD thesis we analyze the medium modification of the pi-omega-rho\ncoupling and subsequently discuss its possible influence on the dilepton\nproduction rate in relativistic heavy-ion collisions. The first part of the\nthesis is devoted to the medium modifications of the Dalitz decays from the\nomega and rho mesons in nuclear matter. We use the relativistic field theory\nformalism describing modifications of the coupling by one-loop Feynman diagrams\nwith nucleons and Delta(1232) isobars. We consider cases when the decaying\nparticle is at rest or at motion with respect to the medium. We investigate the\ndependence of medium effects on the dilepton invariant mass and observe a\nsizeable increase of the effective coupling constants compared to their vacuum\nvalues. The effect grows with density. In the second part of the thesis we\napply our model to evaluate the influence of the medium effects on the dilepton\nproduction from the Dalitz decays. In the calculations of the dilepton spectrum\nwe use the model of the hydrodynamic expansion of the fire cylinder. In our\ncomparison to the CERES dilepton data we take into account the experimental\ncuts. The medium modifications enhance the effect of the Dalitz decays. It is\nworth to point out that in the medium the rho decay due to the isospin\ndegeneracy becomes as important as the omega decay. The main new and original\nresults of the thesis are: 1. Significant in-medium increase of the\npi-omega-rho coupling constant. 2. Large enhancement of the Dalitz decays from\nthe omega and rho mesons in the range 0.2-0.6 GeV of the dilepton invariant\nmass.",
    "arxiv_id": "nucl-th/0411084",
    "authors": [
      "Agnieszka Bieniek"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Modification of the pi-omega-rho vertex in nuclear medium and its   influence on the dilepton production rate in relativistic heavy-ion   collisions",
    "url": "https://arxiv.org/abs/nucl-th/0411084"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "999db8ba-a961-4aaf-b987-3f3b2a82a125",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}