{
  "id": "1010.5603",
  "version": "v3",
  "published": "2010-10-27T08:30:00.000Z",
  "updated": "2011-07-25T11:44:52.000Z",
  "title": "Chiral unitary approach to η' N scattering at low energies",
  "authors": [
    "E. Oset",
    "A. Ramos"
  ],
  "comment": "Reference [54] modified. 15 pages, 6 figures",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "We study the \\eta' N interaction within a chiral unitary approach which includes \\pi N, \\eta N and related pseudoscalar meson-baryon coupled channels. Since the SU(3) singlet does not contribute to the standard interaction and the \\eta' is mostly a singlet, the resulting scattering amplitude is very small and inconsistent with experimental estimations of the \\eta' N scattering length. The additional consideration of vector meson-baryon states into the coupled channel scheme, via normal and anomalous couplings of pseudoscalar to vector mesons, enhances substantially the \\eta' N amplitude. We also exploit the freedom of adding to the Lagrangian a new term, allowed by the symmetries of QCD, which couples baryons to the singlet meson of SU(3). Adjusting the unknown strength to the \\eta' N scattering length, we obtain predictions for the elastic \\eta' N --> \\eta' N and inelastic \\eta' N --> \\eta N, \\pi N, K\\Lambda, K\\Sigma\\ cross sections at low \\eta' energies, and discuss their significance.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2011-07-25T11:44:52.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.15.Tk",
      "12.38.Lg",
      "13.75.Gx",
      "14.40.Cs",
      "11.30.Rd"
    ],
    "keywords": [
      "chiral unitary approach",
      "low energies",
      "scattering length",
      "vector meson-baryon states",
      "related pseudoscalar meson-baryon coupled channels"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1016/j.physletb.2011.09.025",
      "journal": "Physics Letters B",
      "year": 2011,
      "month": "Oct",
      "volume": 704,
      "number": 4,
      "pages": 334
    },
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 874648,
      "adsabs": "2011PhLB..704..334O"
    }
  }
}