{
  "id": "hep-ex/9703013",
  "version": "v1",
  "published": "1997-03-25T18:40:29.000Z",
  "updated": "1997-03-25T18:40:29.000Z",
  "title": "Studies of the Cabbibo-Suppressed Decays $D^+ \\to π^0 \\ell^+ ν$ and $D^+ \\to ηe^+ ν_e$",
  "authors": [
    "CLEO Collaboration",
    "J. Bartelt"
  ],
  "comment": "10 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS",
  "journal": "Phys.Lett.B405:373-378,1997",
  "doi": "10.1016/S0370-2693(97)00649-7",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Using 4.8 fb$^{-1}$ of data taken with the CLEO II detector, the branching fraction for the Cabibbo-suppressed decay $D^+\\to\\pi^0\\ell^+\\nu$ measured relative to the Cabibbo favored decay $D^+\\to\\bar{K^0}\\ell^+\\nu$ is found to be $0.046\\pm 0.014\\pm 0.017$. Using $V_{cs}$ and $V_{cd}$ from unitarity constraints, we determine $| f_+^{\\pi}(0)/f_+^K(0)|^2=0.9\\pm 0.3\\pm 0.3$ We also present a 90% confidence level upper limit for the branching ratio of the decay $D^+ \\to \\eta e^+\\nu_e$ relative to that for $D^+ \\to \\pi^0 e^+\\nu_e$ of 1.5.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-03-25T18:40:29.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.25.Ft",
      "14.40.Lb"
    ],
    "keywords": [
      "cabbibo-suppressed decays",
      "confidence level upper limit",
      "data taken",
      "cabibbo favored decay",
      "unitarity constraints"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Physics Letters B",
      "year": 1997,
      "month": "Feb",
      "volume": 405,
      "pages": 373
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 441553,
      "adsabs": "1997PhLB..405..373B"
    }
  }
}