{
  "id": "1608.00979",
  "version": "v1",
  "published": "2016-08-02T20:00:07.000Z",
  "updated": "2016-08-02T20:00:07.000Z",
  "title": "On the spin excitation energy of the nucleon in the Skyrme model",
  "authors": [
    "C. Adam",
    "J. Sanchez-Guillen",
    "A. Wereszczynski"
  ],
  "comment": "Latex, 8 pages, no figures",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "In the Skyrme model of nucleons and nuclei, the spin excitation energy of the nucleon is traditionally calculated by a fit of the rigid rotor quantization of spin/isospin of the fundamental Skyrmion (the hedgehog) to the masses of the nucleon and the Delta resonance. The resulting, quite large spin excitation energy of the nucleon of about $ 73\\, \\mbox{MeV}$ is, however, rather difficult to reconcile with the small binding energies of physical nuclei, among other problems. Here we argue that a more reliable value for the spin excitation energy of the nucleon, compatible with many physical constraints, is about $ 16\\, \\mbox{MeV}$. The fit of the rigid rotor to the Delta, on the other hand, is problematic in any case, because it implies the use of a nonrelativistic method for a highly relativistic system.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-08-02T20:00:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "skyrme model",
      "large spin excitation energy",
      "rigid rotor quantization",
      "fundamental skyrmion",
      "delta resonance"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}