{
  "id": "hep-ph/0112077",
  "version": "v3",
  "published": "2001-12-05T14:14:14.000Z",
  "updated": "2002-04-10T05:58:17.000Z",
  "title": "Lepton Flavor Violation in the SUSY-GUT Models with Lopsided Mass Matrix",
  "authors": [
    "Xiao-Jun Bi",
    "Yuan-Ben Dai"
  ],
  "comment": "24 pages, 8 figures",
  "journal": "Phys.Rev. D66 (2002) 076006",
  "doi": "10.1103/PhysRevD.66.076006",
  "categories": [
    "hep-ph"
  ],
  "abstract": "The tiny neutrino masses measured in the neutrino oscillation experiments can be naturally explained by the supersymmetric see-saw mechanism. If the supersymmetry breaking is mediated by gravity, the see-saw models may predict observable lepton flavor violating effects. In this work, we investigate the lepton flavor violating process $\\mu\\to e\\gamma$ in the kind of neutrino mass models based on the idea of the ``lopsided'' form of the charged lepton mass matrix. The constraints set by the muon anomalous magnetic moment are taken into account. We find the present models generally predict a much larger branching ratio of $\\mu\\to e\\gamma$ than the experimental limit. Conversely, this process may give strong constraint on the lepton flavor structure. Following this constraint we then find a new kind of the charged lepton mass matrix. The feature of the structure is that both the elements between the 2-3 and 1-3 generations are ``lopsided''. This structure produces a very small 1-3 mixing and a large 1-2 mixing in the charged lepton sector, which naturally leads to small $Br(\\mu\\to e\\gamma)$ and the LMA solution for the solar neutrino problem.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2002-04-10T05:58:17.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.60.Pq",
      "11.30.Hv",
      "13.35.Bv",
      "12.10.Dm"
    ],
    "keywords": [
      "lepton flavor violation",
      "lopsided mass matrix",
      "susy-gut models",
      "lepton flavor violating effects",
      "charged lepton mass matrix"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 567810
    }
  }
}