{
  "id": "1712.09963",
  "version": "v1",
  "published": "2017-12-28T18:20:35.000Z",
  "updated": "2017-12-28T18:20:35.000Z",
  "title": "Low-Energy Effective Field Theory of Lepton-Proton Bremsstrahlung",
  "authors": [
    "P. Talukdar",
    "F. Myhrer",
    "U. Raha"
  ],
  "comment": "16 pages, 7 figures",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "We calculate the cross section for the lepton-proton bremsstrahlung process $l+p\\to l^\\prime +p+\\gamma$ in effective field theory. This process corresponds to an undetected background signal for the proposed MUSE experiment at PSI. MUSE is designed to measure elastic scattering of low-energy electrons and muons off a proton target in order to extract a precise value for the proton's r.m.s. radius. We show that the commonly used {\\it peaking approximation}, which is used to evaluate the {\\it radiative tail} for the elastic cross section, is not applicable for muon proton scattering at the low-energy MUSE kinematics. We also correct a misprint in a commonly cited review article.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-28T18:20:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low-energy effective field theory",
      "lepton-proton bremsstrahlung process",
      "low-energy muse kinematics",
      "elastic cross section",
      "process corresponds"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}