{
  "id": "hep-ph/0002269",
  "version": "v1",
  "published": "2000-02-25T14:47:17.000Z",
  "updated": "2000-02-25T14:47:17.000Z",
  "title": "Axial anomaly, vector meson dominance and $π^0 \\to γγ$ at finite temperature",
  "authors": [
    "C. A. Dominguez",
    "M. Loewe"
  ],
  "comment": "8 pages, no figures",
  "journal": "Phys.Lett. B481 (2000) 295-298",
  "doi": "10.1016/S0370-2693(00)00453-6",
  "categories": [
    "hep-ph"
  ],
  "abstract": "A thermal Finite Energy QCD Sum Rule is used to determine the temperature behaviour of the $\\omega \\rho \\pi$ strong coupling. This coupling decreases with increasing $T$ and vanishes at the critical temperature, a likely signal for quark deconfinement. This is then used in the Vector Meson Dominance (VMD) expression for the $\\pi^0 \\to \\gamma \\gamma$ amplitude, which is also found to vanish at the critical temperature, as expected. This result supports the validity of VMD at $T \\neq 0$. However, if VMD would not hold at finite temperature, then there is no prediction for the $\\pi^0 \\to \\gamma \\gamma$ amplitude.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-02-25T14:47:17.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "vector meson dominance",
      "finite temperature",
      "axial anomaly",
      "thermal finite energy qcd sum",
      "finite energy qcd sum rule"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 524367
    }
  }
}