{
  "id": "0908.4143",
  "version": "v1",
  "published": "2009-08-28T07:06:28.000Z",
  "updated": "2009-08-28T07:06:28.000Z",
  "title": "Coulomb-assisted $\\bmΣ^-$-nucleus bound states in the ($K^-$, $π^+$) reaction",
  "authors": [
    "Toru Harada",
    "Yoshiharu Hirabayashi"
  ],
  "journal": "Nucl.Phys.A829:100-125,2009",
  "doi": "10.1016/j.nuclphysa.2009.08.005",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We study a production of Coulomb-assisted $\\Sigma^-$-nucleus bound states by nuclear ($K^-$, $\\pi^+$) reactions within a distorted-wave impulse approximation, so as to examine several types of the $\\Sigma$-nucleus potentials that are consistent with the available $\\Sigma^-$ atomic X-ray data and nuclear ($\\pi^-$, $K^+$) data. We theoretically demonstrate the inclusive ($K^-$, $\\pi^+$) spectra of the $\\Sigma^-$ unstable bound states on $^{28}$Si, $^{58}$Ni, and $^{208}$Pb targets at incident $K^-$ lab momenta $p_{K}= 400\\text{--}800$ MeV/c. The results show that the near-recoilless ($K^-$, $\\pi^+$) reaction on the $^{58}$Ni target gives a clear candidate to confirm properties of the $\\Sigma$-nucleus potentials having a repulsion inside the nuclear surface and an attraction outside the nucleus with a sizable absorption, whereas details of the repulsion of the potential at the nuclear center cannot be determined by the inclusive spectra. This is a promising attempt to extract properties of the $\\Sigma$-nucleus potential in the nucleus at forthcoming J-PARC experiments, as a full complement to the analyses of the $\\Sigma^-$ atomic and ($\\pi^-$, $K^+$) data.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-08-28T07:06:28.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.80.+a",
      "24.50.+g",
      "25.80.Pw",
      "24.10.Eq"
    ],
    "keywords": [
      "nucleus bound states",
      "nucleus potential",
      "atomic x-ray data",
      "distorted-wave impulse approximation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nuclear Physics A",
      "year": 2009,
      "month": "Oct",
      "volume": 829,
      "number": 1,
      "pages": 100
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 829689,
      "adsabs": "2009NuPhA.829..100H"
    }
  }
}