{
  "id": "nucl-th/0112064",
  "version": "v4",
  "published": "2001-12-21T03:18:24.000Z",
  "updated": "2002-05-27T20:44:13.000Z",
  "title": "Dissociation of Heavy Quarkonia in the Quark-Gluon Plasma",
  "authors": [
    "Cheuk-Yin Wong"
  ],
  "comment": "19 pages, in LaTex, add an appendix and a figure",
  "journal": "J.Phys.G28:2349-2364,2002",
  "doi": "10.1088/0954-3899/28/9/302",
  "categories": [
    "nucl-th",
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "Using a temperature-dependent potential obtained from lattice gauge calculations, we study the stability of heavy quarkonia in the quark-gluon plasma. We find that only the Upsilon(1S) and the eta_b(1S) are bound in the quark-gluon plasma, and have a small binding energy. The quark-gluon plasma may be revealed by an Upsilon(1S) dilepton peak with an invariant mass close to twice the current b quark mass, which is lower than the Upsilon(1S) mass in free space. The quarkonia Upsilon(1S) and eta_b(1S) can dissociate by collision with quarks and gluons in the quark-gluon plasma. We evaluate the dissociation cross section of the Upsilon(1S) due to gluon absorption. The Upsilon(1S) and the eta_b(1S) can also dissociate spontaneously at temperatures above the dissociation temperature 1.11T_c, where T_c is the quark-gluon plasma phase transition temperature. At temperatures slightly above the dissociation temperature these states appear as resonances, which provides another signature for the quark-gluon plasma.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2002-05-27T20:44:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "heavy quarkonia",
      "quark-gluon plasma phase transition temperature",
      "dissociation temperature",
      "lattice gauge calculations",
      "invariant mass close"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 19,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 568860
    }
  }
}