{
  "id": "hep-ph/0103154",
  "version": "v1",
  "published": "2001-03-14T11:44:30.000Z",
  "updated": "2001-03-14T11:44:30.000Z",
  "title": "The $B -> X_s gamma gamma$ decay in the standard model and the general two-Higgs-doublet model",
  "authors": [
    "Junjie Cao",
    "Gongru Lu",
    "Zhenjun Xiao"
  ],
  "comment": "Latex file, 27 pages with 17 ps and eps figures. Accepted for publication in Phys.Rev. D",
  "journal": "Phys.Rev. D64 (2001) 014012",
  "doi": "10.1103/PhysRevD.64.014012",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Based on the low-energy effective Hamiltonian, we calculate the new physics corrections to the branching ratio and the differential distributions of the rare decay $B \\to X_s \\gamma \\gamma$ induced by the new gluonic and electroweak charged-Higgs penguin diagrams in the general two-Higgs-doublet model with the restriction $\\lambda_{ij}^{U,D}=0$ for $i\\neq j$. Within the considered parameter space, we see the following: (a) the standard model predictions of ${\\cal B}(B \\to X_s \\gamma \\gamma)$ and $A_{FB}$ have a moderate $m_s$ dependence; (b) in model III, the prediction of the branching ratio ${\\cal B}(B \\to X_s \\gamma \\gamma)$ ranges from one third to three times of the standard model prediction, but is highly correlated with that of ${\\cal}(B \\to X_s \\gamma)$; (c) the new physics enhancement to the branching ratio ${\\cal B}(B \\to X_s \\gamma \\gamma)$ in model II can be as large as $(30-50)%$; (d) the contribution from 1PR diagrams is dominant and hence four normalized differential distributions are insensitive to the variation of scale $\\mu$ and possible new physics corrections; (e) due to the smallness of its decay rate and the long-distance background, the $B \\to X_s \\gamma \\gamma$ decay is not a better process in detecting new physics than the $B \\to X_s \\gamma$ decay.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-03-14T11:44:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "general two-higgs-doublet model",
      "standard model prediction",
      "branching ratio",
      "physics corrections",
      "differential distributions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 27,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 554075
    }
  }
}