{
  "id": "1201.4184",
  "version": "v1",
  "published": "2012-01-19T22:06:38.000Z",
  "updated": "2012-01-19T22:06:38.000Z",
  "title": "Taming the Pion Cloud of the Nucleon",
  "authors": [
    "Mary Alberg",
    "Gerald A. Miller"
  ],
  "comment": "11 pages, 3 figures",
  "doi": "10.1103/PhysRevLett.108.172001",
  "categories": [
    "nucl-th",
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "We present a light-front determination of the pionic contribution to the nucleon self-energy, $\\Sigma_\\pi$, to second-order in pion-baryon coupling constants that allows the pion-nucleon vertex function to be treated in a model-independent manner constrained by experiment. The pion mass $\\mu$ dependence of $\\Sigma_\\pi$ is consistent with chiral perturbation theory results for small values of $\\mu$ and is also linearly dependent on $\\mu$ for larger values, in accord with the results of lattice QCD calculations. The derivative of $\\Sigma_\\pi$ with respect to $\\mu^2$ yields the dominant contribution to the pion content, which is consistent with the $\\bar{d}-\\bar{u}$ difference observed experimentally in the violation of the Gottfried sum rule.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-01-19T22:06:38.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Gc",
      "13.60.Hb",
      "12.39.Fe",
      "14.20.Dh"
    ],
    "keywords": [
      "pion cloud",
      "chiral perturbation theory results",
      "lattice qcd calculations",
      "pion-nucleon vertex function",
      "pionic contribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2012,
      "month": "Apr",
      "volume": 108,
      "number": 17,
      "pages": 172001
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1085330,
      "adsabs": "2012PhRvL.108q2001A"
    }
  }
}