{
  "id": "1602.00457",
  "version": "v1",
  "published": "2016-02-01T10:14:18.000Z",
  "updated": "2016-02-01T10:14:18.000Z",
  "title": "Precision tests via radiative $μ$ and $τ$ leptonic decays",
  "authors": [
    "M. Fael",
    "M. Passera"
  ],
  "comment": "10 pages, 1 figure, to appear in the proceedings of the 12th International Symposium on Radiative Corrections (Radcor 2015) and LoopFest XIV (Radiative Corrections for the LHC and Future Colliders)",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "The branching fractions of radiative leptonic $\\tau$ decays $(\\tau \\to l \\nu \\bar{\\nu} \\gamma$, $l=e,\\mu)$ were recently measured by the Babar collaboration with a relative error of about 3%. The measurement of the branching ratio $\\mathcal{B} (\\tau \\to e \\bar{\\nu} \\nu \\gamma)$, for a minimum photon energy of 10 MeV in the $\\tau$ rest frame, differs from our recent SM prediction by 3.5 standard deviations, whereas our result agrees with Babar's value for $\\mathcal{B} (\\tau \\to \\mu \\bar{\\nu} \\nu \\gamma)$. Our predictions also agree with the measurement of $\\mathcal{B} (\\mu \\to e \\bar{\\nu} \\nu \\gamma)$ by the MEG collaboration. We also report on a recent proposal to test the $\\tau$ dipole moments via precise measurements of radiative leptonic $\\tau$ decays at high-luminosity $B$ factories.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-02-01T10:14:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "leptonic decays",
      "precision tests",
      "radiative leptonic",
      "minimum photon energy",
      "babar collaboration"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160200457F",
      "inspire": 1418816
    }
  }
}