{
  "id": "1704.06248",
  "version": "v1",
  "published": "2017-04-20T17:49:03.000Z",
  "updated": "2017-04-20T17:49:03.000Z",
  "title": "Chiral Extrapolations of the $\\boldsymbol{ρ(770)}$ Meson in $\\mathbf{N_f=2+1}$ Lattice QCD Simulations",
  "authors": [
    "B. Hu",
    "R. Molina",
    "M. Döring",
    "M. Mai",
    "A. Alexandru"
  ],
  "comment": "12 pages, 8 figures",
  "categories": [
    "hep-lat",
    "nucl-th"
  ],
  "abstract": "Recent $N_f=2+1$ lattice data for meson-meson scattering in $p$-wave and isospin $I=1$ are analyzed using a unitarized model inspired by Chiral Perturbation Theory in the inverse-amplitude formulation for two and three flavors. Chiral extrapolations are performed that postdict phase shifts extracted from experiment quite well. In addition, the low-energy constants are compared to the ones from a recent analysis of $N_f=2$ lattice QCD simulations to check for the consistency of the hadronic model used here. Some inconsistencies are detected in the fits to $N_f=2+1$ data, in contrast to the previous analysis of $N_f=2$ data in which the low-energy constants showed a common overlap of 68\\% confidence regions for almost all of the considered data.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-04-20T17:49:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "lattice qcd simulations",
      "chiral extrapolations",
      "low-energy constants",
      "chiral perturbation theory",
      "postdict phase shifts"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}