{
  "id": "1302.7240",
  "version": "v1",
  "published": "2013-02-28T16:01:59.000Z",
  "updated": "2013-02-28T16:01:59.000Z",
  "title": "Bounds on the compactification scale of two universal extra dimensions from exclusive $b \\to s γ$ decays",
  "authors": [
    "Pietro Biancofiore"
  ],
  "comment": "10 pages, 2 figures",
  "categories": [
    "hep-ph"
  ],
  "abstract": "The exclusive radiative $B \\to K^* \\gamma$, $B \\to K^*_2 \\gamma$, $B_s \\to \\phi \\gamma$ and $\\Lambda_b \\to \\Lambda \\gamma$ decays are studied in a new physics scenario with two universal extra dimensions compactified on a chiral square. The computed branching fractions depend on the size $R$ of the extra dimensions, and a comparison with the available measurements allows us to put bounds on such a fundamental parameter. From the mode $B^0 \\to K^{*0} \\gamma$ we obtain the most stringent bound: $1 \\over R>710$ GeV.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-02-28T16:01:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "compactification scale",
      "physics scenario",
      "stringent bound",
      "universal extra dimensions",
      "fundamental parameter"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0954-3899/40/6/065006",
      "journal": "Journal of Physics G Nuclear Physics",
      "year": 2013,
      "month": "Jun",
      "volume": 40,
      "number": 6,
      "pages": "065006"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1221761,
      "adsabs": "2013JPhG...40f5006B"
    }
  }
}