{
  "id": "1508.03991",
  "version": "v1",
  "published": "2015-08-17T12:06:03.000Z",
  "updated": "2015-08-17T12:06:03.000Z",
  "title": "The Pion-Cloud Contribution to the Electromagnetic Nucleon Form Factors",
  "authors": [
    "Daniel Kupelwieser",
    "Wolfgang Schweiger"
  ],
  "comment": "Contribution presented by W. Schweiger at the 21st International Conference on Few-Body Problems in Physics, Chicago IL, May 18-22, 2015; 4 pages, 2 figures",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "We study the electromagnetic structure of the nucleon within a hybrid constituent-quark model that comprises, in addition to the $3q$ valence component, also a $3q$+$\\pi$ non-valence component. To this aim we employ a Poincar\\'e-invariant multichannel formulation based on the point-form of relativistic quantum mechanics. With a simple 3-quark wave function for the bare nucleon, i.e. the $3q$-component, we obtain reasonable results for the nucleon form factors and predict the meson-cloud contribution to be significant only below $Q^2\\lesssim 0.5$\\,GeV$^2$ amounting to about 10\\% for $Q^2\\rightarrow 0$, in accordance with the findings of other authors.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-08-17T12:06:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "electromagnetic nucleon form factors",
      "pion-cloud contribution",
      "poincare-invariant multichannel formulation",
      "hybrid constituent-quark model",
      "relativistic quantum mechanics"
    ],
    "tags": [
      "conference paper"
    ],
    "publication": {
      "doi": "10.1051/epjconf/201611305006"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1388200
    }
  }
}