{
  "id": "hep-ph/9603448",
  "version": "v3",
  "published": "1996-03-31T21:35:03.000Z",
  "updated": "1997-03-11T06:14:09.000Z",
  "title": "Order 1/m_b^3 corrections to B\\to X_c\\ell\\barνdecay and their implication for the measurement of \\barΛand λ_1",
  "authors": [
    "Martin Gremm",
    "Anton Kapustin"
  ],
  "comment": "21 pages, revtex, 2 postscript figures. Section on the nonrelativistic quark model estimates is removed; some points of the computation are clarified; results unchanged",
  "journal": "Phys.Rev.D55:6924-6932,1997",
  "doi": "10.1103/PhysRevD.55.6924",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We compute the order 1/m_b^3 nonperturbative contributions to the inclusive differential B\\to X_c\\ell\\bar\\nu decay rate. They are parametrized by the expectation values of two local and four nonlocal dimension-six operators. We use our results to estimate part of the theoretical uncertainties in the extraction of matrix elements \\bar\\Lambda and \\lambda_1 from the lepton spectrum in the inclusive semileptonic B decay and find them to be very large. We also compute the 1/m_b^3 corrections to the moments of the hadronic invariant mass spectrum in this decay, and combine them with the extracted values of \\bar\\Lambda and \\lambda_1 to put an upper bound on the branching fraction Br(B\\to D^{**}\\ell\\bar\\nu).",
  "revisions": [
    {
      "version": "v3",
      "updated": "1997-03-11T06:14:09.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.20.He",
      "12.39.Hg"
    ],
    "keywords": [
      "corrections",
      "measurement",
      "implication",
      "hadronic invariant mass spectrum",
      "nonlocal dimension-six operators"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 21,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 417238
    }
  }
}