{
  "id": "hep-ph/9610359",
  "version": "v2",
  "published": "1996-10-15T07:07:30.000Z",
  "updated": "1997-05-27T14:39:50.000Z",
  "title": "Further Analysis on σ-particle Properties",
  "authors": [
    "Shin Ishida",
    "Taku Ishida",
    "Muneyuki Ishida",
    "Kunio Takamatsu",
    "Tsuneaki Tsuru"
  ],
  "comment": "Updated with recent progress",
  "journal": "Prog. Theor. Phys. 98 (1997) 1005-1010",
  "doi": "10.1143/PTP.98.1005",
  "categories": [
    "hep-ph"
  ],
  "abstract": "In a previous work, we have reanalyzed the I=0 S-wave \\pi\\pi-scattering phase-shift through a new method of Interfering Breit-Wigner amplitudes, and have shown the existence of a light scalar, \\sigma particle, accompanied by a negative \"repulsive core\"-type background phase-shift, whose origin may have some correspondence to a ``compensating'' \\pi\\pi contact interaction. In this work we make further analysis on the phase shift under KKbar threshold from the same standpoint, to determine precise values of \\sigma mass and width, so far as present experimental data are concerned.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1997-05-27T14:39:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "properties",
      "determine precise values",
      "contact interaction",
      "light scalar",
      "background phase-shift"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}