{
  "id": "1712.02664",
  "version": "v1",
  "published": "2017-12-07T15:14:53.000Z",
  "updated": "2017-12-07T15:14:53.000Z",
  "title": "Repulsion and absorption of the $Σ$-nucleus potential for $Σ^-$-$^5$He in the $^6$Li($π^-$, $K^+$) reaction",
  "authors": [
    "Toru Harada",
    "Ryotaro Honda",
    "Yoshiharu Hirabayashi"
  ],
  "comment": "35 pages, 11 figures",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We study phenomenologically inclusive spectra of the $^6$Li($\\pi^-$, $K^+$) reaction at 1.2 GeV/$c$ within a distorted-wave impulse approximation with the optimal Fermi-averaging $\\pi^- p \\to K^+ \\Sigma^-$ $t$ matrix. We attempt to clarify the property of a $\\Sigma$-nucleus potential for $\\Sigma^-$-$^5$He by comparing the calculated spectra with the data of the J-PARC E10 experiment. The result shows that the repulsive and absorptive components of the $\\Sigma^-$-$^5$He potential provide the ability to explain the data of the continuum spectra in $\\Sigma$ and $\\Lambda$ regions; the strengths of $V_\\Sigma \\simeq$ +30 MeV and $W_\\Sigma \\simeq$ $-$26 MeV are favored within the Woods-Saxon potential, consistent with analyses for heavier nuclei. Effects of the size and potential range for $\\Sigma^-$-$^5$He in the neutron excess of $(N-Z)/(N+Z)=$ 0.2 are also discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-07T15:14:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "nucleus potential",
      "absorption",
      "j-parc e10 experiment",
      "distorted-wave impulse approximation",
      "neutron excess"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 35,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}