{
  "id": "nucl-th/0511042",
  "version": "v2",
  "published": "2005-11-16T20:00:46.000Z",
  "updated": "2005-12-21T18:02:46.000Z",
  "title": "The near threshold N N -> d pi reaction in chiral perturbation theory",
  "authors": [
    "A. Gardestig",
    "D. R. Phillips",
    "Ch. Elster"
  ],
  "comment": "25 pages, REVTeX4, 5 eps figures, 1 reference added, 1 removed, changed cutoffs shown in Table III, some improvements in the text and figures, conclusions unaltered, accepted by PRC",
  "journal": "Phys.Rev.C73:024002,2006",
  "doi": "10.1103/PhysRevC.73.024002",
  "categories": [
    "nucl-th",
    "hep-ph",
    "nucl-ex"
  ],
  "abstract": "The near-threshold n p -> d pi0 cross section is calculated in chiral perturbation theory to next-to-leading order in the expansion parameter sqrt{M m_pi}/Lambda_chi. At this order irreducible pion loops contribute to the relevant pion-production operator. While their contribution to this operator is finite, considering initial-and final-state distortions produces a linear divergence in its matrix elements. We renormalize this divergence by introducing a counterterm, whose value we choose in order to reproduce the threshold n p -> d pi0 cross section measured at TRIUMF. The energy-dependence of this cross section is then predicted in chiral perturbation theory, being determined by the production of p-wave pions, and also by energy dependence in the amplitude for the production of s-wave pions. With an appropriate choice of the counterterm, the chiral prediction for this energy dependence converges well.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2005-12-21T18:02:46.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.40.Qa",
      "12.39.Fe",
      "13.75.Gx",
      "25.10.+s"
    ],
    "keywords": [
      "chiral perturbation theory",
      "pi reaction",
      "initial-and final-state distortions produces",
      "irreducible pion loops contribute",
      "pi0 cross section"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. C"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 698151
    }
  }
}