{
  "id": "1301.0256",
  "version": "v1",
  "published": "2013-01-02T16:26:37.000Z",
  "updated": "2013-01-02T16:26:37.000Z",
  "title": "Novel shell-model analysis of the $^{136}$Xe double beta decay nuclear matrix elements",
  "authors": [
    "M. Horoi",
    "B. A. Brown"
  ],
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "Neutrinoless double beta decay, if observed, could distinguish whether neutrino is a Dirac or a Majorana particle, and it could be used to determine the absolute scale of the neutrino masses. $^{136}$Xe is one of the most promising candidates for observing this rare event. However, until recently there were no positive result for the allowed and less rare two-neutrino double beta decay mode. The small nuclear matrix element associated with the small half-life represents a challenge for nuclear structure models used for its calculation. We report a new shell-model analysis of the two-neutrino double beta decay of $^{136}$Xe, which takes into account all relevant nuclear orbitals necessary to fully describe the associated Gamow-Teller strength. We further use the new model to analyze the main contributions to the neutrinoless double beta decay half-life, and show that they are also diminished.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-01-02T16:26:37.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.60.Cs",
      "23.40.Hc",
      "23.40.Bw"
    ],
    "keywords": [
      "beta decay nuclear matrix elements",
      "double beta decay nuclear matrix",
      "xe double beta decay nuclear",
      "novel shell-model analysis",
      "two-neutrino double beta decay"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevLett.110.222502",
      "journal": "Physical Review Letters",
      "year": 2013,
      "month": "May",
      "volume": 110,
      "number": 22,
      "pages": 222502
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1209142,
      "adsabs": "2013PhRvL.110v2502H"
    }
  }
}