{
  "id": "0801.3635",
  "version": "v3",
  "published": "2008-01-23T18:14:15.000Z",
  "updated": "2008-11-04T19:07:12.000Z",
  "title": "X(2175) as a resonant state of the $φK \\bar{K}$ system",
  "authors": [
    "A. Martínez Torres",
    "K. P. Khemchandani",
    "L. S. Geng",
    "M. Napsuciale",
    "E. Oset"
  ],
  "comment": "version accepted for publication",
  "journal": "Phys.Rev.D78:074031,2008",
  "doi": "10.1103/PhysRevD.78.074031",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We perform a Faddeev calculation for the three mesons system, $\\phi K \\bar{K}$, taking the interaction between two pseudoscalar mesons and between a vector and a pseudoscalar meson from the chiral unitary approach. We obtain a neat resonance peak around a total mass of 2150 MeV and an invariant mass for the $K \\bar{K}$ system around 970 MeV, very close to the $f_0(980)$ mass. The state appears in I=0 and qualifies as a $\\phi f_0(980)$ resonance. We enlarge the space of states including $\\phi \\pi \\pi$, since $\\pi \\pi$ and $K \\bar{K}$ build up the $f_0$ (980), and find moderate changes that serve to quantify theoretical uncertainties. No state is seen in I=1. This finding provides a natural explanation for the recent state found at BABAR and BES, the X(2175), which decays into $\\phi f_0(980)$.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2008-11-04T19:07:12.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.40.Cs",
      "25.75.Dw",
      "21.45.-v"
    ],
    "keywords": [
      "resonant state",
      "pseudoscalar meson",
      "chiral unitary approach",
      "neat resonance peak",
      "mesons system"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2008,
      "month": "Oct",
      "volume": 78,
      "number": 7,
      "pages": "074031"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 778020,
      "adsabs": "2008PhRvD..78g4031M"
    }
  }
}