{
  "id": "1010.4192",
  "version": "v1",
  "published": "2010-10-20T13:17:57.000Z",
  "updated": "2010-10-20T13:17:57.000Z",
  "title": "Unitary and causal dynamics based on the chiral Lagrangian",
  "authors": [
    "A. M. Gasparyan",
    "M. F. M. Lutz"
  ],
  "comment": "Invited plenary talk at Chiral 10 Workshop, Valencia (Spain), June 21-24, 2010",
  "journal": "AIP Conf.Proc.1322:232-240,2010",
  "doi": "10.1063/1.3541986",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Pion-nucleon scattering, pion photoproduction, and nucleon Compton scattering are analyzed within a scheme based on the chiral Lagrangian. Partial-wave amplitudes are obtained by an analytic extrapolation of subthreshold reaction amplitudes computed in chiral perturbation theory, where the constraints set by electromagnetic-gauge invariance, causality and unitarity are used to stabilize the extrapolation. Experimental data are reproduced up to energies $\\sqrt{s}\\simeq 1300$ MeV in terms of the parameters relevant at order $Q^3$. A striking puzzle caused by an old photon asymmetry measurement close to the pion production threshold is discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-10-20T13:17:57.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Rd",
      "12.38.Aw",
      "13.30.Ce",
      "25.20.Lj"
    ],
    "keywords": [
      "chiral lagrangian",
      "causal dynamics",
      "old photon asymmetry measurement close",
      "chiral perturbation theory",
      "subthreshold reaction amplitudes"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "AIP Conf. Proc."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 873499,
      "adsabs": "2010AIPC.1322..232G"
    }
  }
}