{
  "id": "1405.4990",
  "version": "v1",
  "published": "2014-05-20T08:28:43.000Z",
  "updated": "2014-05-20T08:28:43.000Z",
  "title": "Octet baryon masses and sigma terms in covariant baryon chiral perturbation theory",
  "authors": [
    "Xiu-Lei Ren",
    "Li-Sheng Geng",
    "Jie Meng"
  ],
  "comment": "4 pages; presented by Xiu-Lei Ren at The Seventh International Symposium on Chiral Symmetry in Hadrons and Nuclei (Chiral 2013), October 27-30, 2013, Beijing, China",
  "categories": [
    "nucl-th",
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "We report an analysis of the octet baryon masses using the covariant baryon chiral perturbation theory up to next-to-next-to-next-to-leading order with and without the virtual decuplet contributions. Particular attention is paid to the finite-volume corrections and the finite lattice spacing effects on the baryon masses. A reasonable description of all the publicly available $n_f=2+1$ lattice QCD data is achieved.Utilyzing the Feynman-Hellmann theorem, we determine the nucleon sigma terms as $\\sigma_{\\pi N}=55(1)(4)$ MeV and $\\sigma_{sN}=27(27)(4)$ MeV.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-20T08:28:43.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.Fe",
      "12.38.Gc",
      "14.20.Gk"
    ],
    "keywords": [
      "covariant baryon chiral perturbation theory",
      "octet baryon masses",
      "sigma terms",
      "lattice qcd data",
      "virtual decuplet contributions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1142/9789814618229_0033"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1297231,
      "adsabs": "2015cshn.conv..181R"
    }
  }
}