{
  "id": "hep-ph/9302269",
  "version": "v1",
  "published": "1993-02-17T19:22:00.000Z",
  "updated": "1993-02-17T19:22:00.000Z",
  "title": "Reparametrization invariance and the expansion of currents in the heavy quark effective theory",
  "authors": [
    "Matthias Neubert"
  ],
  "comment": "10 pages ReVTeX, SLAC-PUB-6059 (no figures)",
  "journal": "Phys.Lett. B306 (1993) 357-362",
  "doi": "10.1016/0370-2693(93)90091-U",
  "categories": [
    "hep-ph"
  ],
  "abstract": "The coefficients appearing at leading and subleading order in the $1/m$ expansion of bilinear heavy quark currents are related to each other by imposing reparametrization invariance on both the effective current operators and the short-distance coefficient functions in the heavy quark effective theory. When combined with present knowledge about the leading order coefficients, the results allow to calculate all coefficients appearing at order $1/m$ to next-to-leading order in renormalization-group improved perturbation theory. They also provide a meaningful definition of the velocity transfer variable $v\\cdot v'$ to order $1/m$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1993-02-17T19:22:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "heavy quark effective theory",
      "bilinear heavy quark currents",
      "short-distance coefficient functions",
      "coefficients appearing",
      "imposing reparametrization invariance"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "RevTeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 352783
    }
  }
}