{
  "id": "1509.00955",
  "version": "v1",
  "published": "2015-09-03T07:01:28.000Z",
  "updated": "2015-09-03T07:01:28.000Z",
  "title": "Hyperon forward spin polarizability gamma0 in baryon chiral perturbation theory",
  "authors": [
    "Astrid Hiller Blin",
    "Thomas Gutsche",
    "Tim Ledwig",
    "Valery E. Lyubovitskij"
  ],
  "categories": [
    "hep-ph"
  ],
  "abstract": "We present the calculation of the hyperon forward spin polarizability gamma0 using manifestly Lorentz covariant baryon chiral perturbation theory including the intermediate contribution of the spin 3/2 states. As at the considered order the extraction of gamma0 is a pure prediction of chiral perturbation theory, the obtained values are a good test for this theory. After including explicitly the decuplet states, our SU(2) results have a very good agreement with the experimental data and we extend our framework to SU(3) to give predictions to the hyperons' gamma0 values. Prominent are the Sigma^- and Xi^- baryons as their photon transition to the decuplet is forbidden in SU(3) symmetry and therefore they are not sensitive to the explicit inclusion of the decuplet in the theory.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-03T07:01:28.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Rd",
      "12.39.Fe",
      "13.60.Fz",
      "14.20.Jn"
    ],
    "keywords": [
      "baryon chiral perturbation theory",
      "hyperon forward spin polarizability gamma0",
      "lorentz covariant baryon chiral",
      "covariant baryon chiral perturbation"
    ],
    "publication": {
      "doi": "10.1103/PhysRevD.92.096004"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015arXiv150900955H",
      "inspire": 1391654
    }
  }
}