{
  "id": "1908.11816",
  "version": "v1",
  "published": "2019-08-30T16:14:40.000Z",
  "updated": "2019-08-30T16:14:40.000Z",
  "title": "Constraints from a large-N_c analysis on meson-baryon interactions at chiral order Q^3",
  "authors": [
    "Yonggoo Heo",
    "C. Kobdaj",
    "M. F. M. Lutz"
  ],
  "comment": "24 pages",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We consider the chiral Lagrangian for baryon fields with J^P =\\frac{1}{2}^+ or J^P =\\frac{3}{2}^+ quantum numbers as constructed from QCD with up, down and strange quarks. The specific class of counter terms that are of chiral order Q^3 and contribute to meson-baryon interactions at the two-body level is constructed. Altogether we find 24 terms. In order to pave the way for realistic applications we establish a set of 22 sum rules for the low-energy constants as they are implied by QCD in the large-N_c limit. Given such a constraint there remain only 2 independent unknown parameters that need to be determined by either Lattice QCD simulations or directly from experimental cross section measurements. At subleading order we arrive at 5 parameters.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-08-30T16:14:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chiral order",
      "meson-baryon interactions",
      "constraint",
      "experimental cross section measurements",
      "lattice qcd simulations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}