{
  "id": "nucl-th/0609007",
  "version": "v1",
  "published": "2006-09-04T10:46:52.000Z",
  "updated": "2006-09-04T10:46:52.000Z",
  "title": "Advances in the field-theoretic understanding of pion production in nucleon-nucleon collisions",
  "authors": [
    "V. Lensky",
    "J. Haidenbauer",
    "C. Hanhart",
    "V. Baru",
    "A. Kudryavtsev",
    "U. -G. Meißner"
  ],
  "comment": "To appear in the proceedings of the international conference MESON 2006, Cracow, Poland, 9 - 13 June 2006; 4 pages, 2 figures, uses ws-ijmpa.cls",
  "journal": "Int.J.Mod.Phys.A22:591-595,2007",
  "doi": "10.1142/S0217751X07035902",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We study the production amplitude for the reaction $NN\\to NN\\pi$ up to next-to-leading order in chiral perturbation theory. We show that the irreducible chiral loops at this order exactly cancel those terms that arise from the off-shell parts of the $\\pi N$ rescattering vertex. This cancellation is required for formal consistency of the whole scheme. The net effect of the inclusion of all next-to-leading order loops is to enhance the leading rescattering amplitude by a factor of 4/3 compared to phenomenological studies, bringing its contribution to the cross section for $pp\\to d\\pi^+$ close to the experimental value.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-09-04T10:46:52.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.40.Ve",
      "21.30.Fe",
      "12.39.Fe",
      "25.10.+s"
    ],
    "keywords": [
      "pion production",
      "nucleon-nucleon collisions",
      "field-theoretic understanding",
      "next-to-leading order",
      "chiral perturbation theory"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "publication": {
      "journal": "International Journal of Modern Physics A",
      "year": 2007,
      "volume": 22,
      "number": "2-03",
      "pages": 591
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 725324,
      "adsabs": "2007IJMPA..22..591L"
    }
  }
}