{
  "id": "hep-lat/0310014",
  "version": "v4",
  "published": "2003-10-06T02:51:43.000Z",
  "updated": "2004-09-21T05:05:02.000Z",
  "title": "Lattice study of exotic S=+1 baryon",
  "authors": [
    "Shoichi Sasaki"
  ],
  "comment": "4 pages, 4 figures, REVTEX4, v3:one figure added as recommended by referee, v4: version accepted for publication in PRL, increased statistics, typos corrected, references added, conclusions remain unchanged",
  "journal": "Phys.Rev.Lett. 93 (2004) 152001",
  "doi": "10.1103/PhysRevLett.93.152001",
  "categories": [
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "We propose S=+1 baryon interpolating operators, which are based on an exotic description of the antidecuplet baryon like diquark-diqaurk-antiquark. By using one of the new operators, the mass spectrum of the spin-1/2 pentaquark states is calculated in quenched lattice QCD at $\\beta=6/g^2=6.2$ on a $32^3\\times48$ lattice. It is found that the $J^P$ assignment of the lowest $\\Theta(uudd \\bar s)$ state is most likely $(1/2)^-$. We also calculate the mass of the charm analog of the $\\Theta$ and find that the $\\Theta_c(uudd \\bar c)$ state lies much higher than the $DN$ threshold, in contrast to several model predictions.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2004-09-21T05:05:02.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Gc",
      "14.20.Lq",
      "11.15.Ha",
      "12.39.Mk"
    ],
    "keywords": [
      "lattice study",
      "exotic description",
      "antidecuplet baryon",
      "model predictions",
      "pentaquark states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 629862
    }
  }
}