{
  "id": "hep-ph/9310299",
  "version": "v1",
  "published": "1993-10-15T15:26:12.000Z",
  "updated": "1993-10-15T15:26:12.000Z",
  "title": "Light Quark Masses from Exclusive Tau Decays: An Experimental Proposal",
  "authors": [
    "J. Stern",
    "N. H. Fuchs",
    "M. Knecht"
  ],
  "comment": "18 pages, 13 figures not included, available upon request, IPNO-TH 93-38",
  "categories": [
    "hep-ph"
  ],
  "abstract": "A method of indirect measurement of the light quark running mass $\\hat{m} = (m_d + m_u)/2$ is elaborated in detail. It is based on measuring 1\\%-level azimuthal angular asymmetries in the decay $\\tau \\rightarrow \\nu_\\tau + 3\\pi$. The latter are then used in QCD sum rules to obtain experimental lower bounds for $\\hat{m}$. For a sample of $2.5 \\times 10^5$ $\\tau \\rightarrow \\nu_\\tau + 3\\pi$ decays free of background, the resulting statistical error in the bound for $\\hat{m}$ is estimated to be 1 MeV, i.e., comparable to the systematic error due to the use of QCD sum rules. Contribution to the Third Workshop on the $\\tau$ Charm Factory 1-6 June 1993, Marbella, Spain.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1993-10-15T15:26:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "light quark masses",
      "exclusive tau decays",
      "experimental proposal",
      "qcd sum rules",
      "azimuthal angular asymmetries"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 359266,
      "adsabs": "1993hep.ph...10299S"
    }
  }
}