{
  "id": "2006.13759",
  "version": "v1",
  "published": "2020-06-24T14:11:38.000Z",
  "updated": "2020-06-24T14:11:38.000Z",
  "title": "Inclusive semileptonic $Λ_b$ decays in the Standard Model and beyond",
  "authors": [
    "Pietro Colangelo",
    "Fulvia De Fazio",
    "Francesco Loparco"
  ],
  "comment": "50 pages, 12 figures",
  "categories": [
    "hep-ph",
    "hep-ex",
    "hep-lat"
  ],
  "abstract": "Inclusive semileptonic decays of beauty baryons are studied using the heavy quark expansion to ${\\cal O}(1/m_b^3)$, at leading order in $\\alpha_s$. The case of a polarized decaying baryon is examined, with reference to $\\Lambda_b$. An extension of the Standard Model effective Hamiltonian inducing $b \\to U \\ell {\\bar \\nu}_ \\ell$ transitions ($U=u,\\,c$ and $\\ell=e,\\,\\mu,\\,\\tau$) is considered, which comprises new vector, scalar, pseudoscalar and tensor operators. The effects of the new operators in several observables are described.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-06-24T14:11:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "heavy quark expansion",
      "inclusive semileptonic decays",
      "beauty baryons",
      "tensor operators",
      "standard model effective hamiltonian inducing"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 50,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}