{
  "id": "0803.4115",
  "version": "v2",
  "published": "2008-03-28T13:36:04.000Z",
  "updated": "2008-12-16T19:02:24.000Z",
  "title": "Manifestly-covariant chiral PT calculation of nucleon Compton scattering",
  "authors": [
    "Vadim Lensky",
    "Vladimir Pascalutsa"
  ],
  "comment": "6 pages, 4 figures, REVTeX; Major revision, the effect of Delta is computed entirely to order p^4 over the Delta-nulceon mass difference",
  "journal": "Pisma Zh.Eksp.Teor.Fiz.89:127-132,2009; JETP Lett.89:108-113,2009",
  "doi": "10.1134/S0021364009030035",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "We compute the Compton scattering off the nucleons in the framework of manifestly covariant baryon chiral perturbation theory (B$\\chi$PT). The results for observables differ substantially from the corresponding calculations in heavy-baryon chiral perturbation theory (HB$\\chi$PT), most appreciably in the forward kinematics. We verify that the covariant $p^3$ result fulfills the forward-Compton-scattering sum rules. We also explore the effect of the $\\Delta$(1232) resonance at order $p^4/\\varDelta$, with $\\varDelta\\approx 300$ MeV, the resonance excitation energy. We find that the substantial effect of the $\\Delta$-excitation on the nucleon polarizabilities can naturally be accommodated in the manifestly covariant calculation.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-12-16T19:02:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.60.Fz",
      "25.20.Dc",
      "14.20.Dh"
    ],
    "keywords": [
      "manifestly-covariant chiral pt calculation",
      "nucleon compton scattering",
      "covariant baryon chiral perturbation theory"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Soviet Journal of Experimental and Theoretical Physics Letters",
      "year": 2009,
      "month": "Apr",
      "volume": 89,
      "number": 3,
      "pages": 108
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 782244,
      "adsabs": "2009JETPL..89..108L"
    }
  }
}