{
  "id": "hep-ph/0408046",
  "version": "v2",
  "published": "2004-08-03T18:04:53.000Z",
  "updated": "2005-01-28T15:53:40.000Z",
  "title": "Implications of the Present Bound on the Width of the Theta(1540)",
  "authors": [
    "R. L. Jaffe",
    "Ambar Jain"
  ],
  "comment": "8 pages, 2 figures",
  "journal": "Phys.Rev. D71 (2005) 034012",
  "doi": "10.1103/PhysRevD.71.034012",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-ex",
    "nucl-th"
  ],
  "abstract": "The recently reported Theta(1540) exotic baryon seems to be very narrow: Gamma(Theta)< 1 MeV according to some analyses. Using methods of low energy scattering theory, we develop expectations for the width of the Theta, an elastic resonance in KN scattering in a theory where the characteristic range of interactions is ~1 Fermi. If the Theta is a potential scattering resonance, generated by the forces in the KN channel, its width is hard to account for unless the KN-channel orbital angular momentum, l, is two or greater. If the Theta is a CDD pole, its coupling to the scattering channel is at least an order of magnitude less than the coupling of the Lambda(1520) unless l is two or greater. Either way, if the Theta proves to be in the KN s- or p-wave, new physics must be responsible for its narrow width.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2005-01-28T15:53:40.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.80.Gw",
      "12.38.-t",
      "13.75.Jz",
      "14.20.Jn"
    ],
    "keywords": [
      "implications",
      "kn-channel orbital angular momentum",
      "low energy scattering theory",
      "narrow width",
      "cdd pole"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 655713
    }
  }
}