{
  "id": "1305.3588",
  "version": "v2",
  "published": "2013-05-15T19:01:18.000Z",
  "updated": "2013-08-30T12:34:17.000Z",
  "title": "D-meson lifetimes within the heavy quark expansion",
  "authors": [
    "Alexander Lenz",
    "Thomas Rauh"
  ],
  "comment": "29 pages, 8 figures, Journal version",
  "journal": "Phys. Rev. D 88, 034004 (2013)",
  "doi": "10.1103/PhysRevD.88.034004",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Even if new data indicate that direct CP violation in D-meson decays is compatible with the standard model expectation, it has triggered a lot of interest, and charm phenomenology will remain an essential part of new physics searches due to its unique role as a probe for flavor-changing neutral currents among up-type quarks. Charm physics poses considerable theoretical challenges, because the charm mass is neither light nor truly heavy. The heavy quark expansion (HQE) provides a perturbative expansion in the inverse heavy quark mass for inclusive rates. It has proved to be very successful in the B sector, yet its validity for charm decays has often been questioned. We present results of a HQE study of D-meson lifetimes including NLO QCD and subleading 1/m_c corrections. We find good agreement with experimental data, but with huge hadronic uncertainties due to missing lattice input for hadronic matrix elements.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-08-30T12:34:17.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Bx",
      "14.40.Lb",
      "12.39.Hg"
    ],
    "keywords": [
      "heavy quark expansion",
      "d-meson lifetimes",
      "inverse heavy quark mass",
      "physics poses considerable theoretical challenges",
      "standard model expectation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2013,
      "month": "Aug",
      "volume": 88,
      "number": 3,
      "pages": "034004"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 29,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1233544,
      "adsabs": "2013PhRvD..88c4004L"
    }
  }
}