{
  "id": "1312.5803",
  "version": "v1",
  "published": "2013-12-20T03:11:49.000Z",
  "updated": "2013-12-20T03:11:49.000Z",
  "title": "The near threshold $π^- p \\to ηn$ reaction in an effective Lagrangian approach",
  "authors": [
    "Qi-Fang Lü",
    "Xiao-Hao Liu",
    "Ju-Jun Xie",
    "De-Min Li"
  ],
  "comment": "5 pages, 4 figures, Accepted by Modern Physics Letters A",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "The near threshold $\\pi^- p \\to \\eta n$ reaction is studied within an effective Lagrangian approach and the isobar model. By considering the contributions from $s$- and $u$-channel nucleon pole and $N^{*}(1535)$ resonance, the total and differential cross sections of the $\\pi^- p \\to \\eta n$ reaction near threshold are calculated. Our theoretical results can fairly reproduce the current experimental data. It is also shown that while the center-of-mass energy lies in the range from the reaction threshold up to $1.65$ GeV, $s$-channel $N^{*}(1535)$ resonance plays the dominant role. The effect from nucleon pole is found to be small but the interference terms between the $N^*(1535)$ resonance and the nucleon pole are significant. The contributions from $t$-channel processes are negligible in the present calculation.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-12-20T03:11:49.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.75.Gx"
    ],
    "keywords": [
      "effective lagrangian approach",
      "current experimental data",
      "channel nucleon pole",
      "center-of-mass energy lies",
      "differential cross sections"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1142/S0217732314500126",
      "journal": "Modern Physics Letters A",
      "year": 2014,
      "month": "Jan",
      "volume": 29,
      "number": 4,
      "pages": 1450012
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1273463,
      "adsabs": "2014MPLA...2950012L"
    }
  }
}