{
  "id": "0710.2971",
  "version": "v2",
  "published": "2007-10-16T13:44:26.000Z",
  "updated": "2007-12-08T09:29:55.000Z",
  "title": "Analysis of $K^+ \\to e^+ ν_{e}γ$ in light-front quark model and chiral perturbation theory of order $p^6$",
  "authors": [
    "Chuan-Hung Chen",
    "Chao-Qiang Geng",
    "Chong-Chung Lih"
  ],
  "comment": "15 pages, 4 figures, final version to be published in PRD",
  "journal": "Phys.Rev.D77:014004,2008",
  "doi": "10.1103/PhysRevD.77.014004",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "Within the frameworks of the light-front quark model (LFQM) and chiral perturbation theory (ChPT) of $O(p^6)$, we reevaluate the form factors of the $K^+ \\to \\gamma$ transition. We use these form factors to study the decay of $K^+ \\to e^+ \\nu_{e}\\gamma$, which is dominated by the structure dependent contribution. We show the differential decay branching ratio as a function of $x=2E_\\gamma/m_K$, where $E_\\gamma$ ($m_K$) is the photon energy (kaon mass). Explicitly, we find that, in the standard model with the cut of $x=0.01$ (0.1), the decay branching ratio of $K^+ \\to e^+ \\nu_{e}\\gamma$ is $1.54 (1.44)\\times 10^{-5}$ and $1.57 (1.47)\\times 10^{-5}$ in the LFQM and ChPT, respectively.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-12-08T09:29:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.Fe",
      "13.20.Eb",
      "12.39.Ki"
    ],
    "keywords": [
      "chiral perturbation theory",
      "light-front quark model",
      "form factors",
      "differential decay branching ratio",
      "structure dependent contribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2008,
      "month": "Jan",
      "volume": 77,
      "number": 1,
      "pages": "014004"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 15,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 764291,
      "adsabs": "2008PhRvD..77a4004C"
    }
  }
}