{
  "id": "2310.19213",
  "version": "v2",
  "published": "2023-10-30T00:49:43.000Z",
  "updated": "2024-01-19T15:35:38.000Z",
  "title": "$J/ψ$ decays into $ω(φ) f_1(1285)$ and $ω(φ) \\,''f_1(1420)''$",
  "authors": [
    "Jia-Xin Lin",
    "Jia-Ting Li",
    "Wei-Hong Liang",
    "Hua-Xing Chen",
    "Eulogio Oset"
  ],
  "comment": "17 pages, 5 figures; v2: discussion added, references added, version to appear in Eur.Phys.J.C",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We perform a theoretical study of the $J/\\psi \\to \\omega (\\phi) K^* \\bar{K} + c.c. \\to \\omega (\\phi) K^0 \\pi^+ K^-$ reactions with the assumption that the $f_1(1285)$ is dynamically generated from a single channel $K^* \\bar{K} + c.c$ interaction in the chiral unitary approach. Two peaks in the $K^0 \\pi^+ K^-$ invariant mass distribution are observed, one clear peak locates at the $f_1(1285)$ nominal mass, the other peak locates at around $1420\\; \\rm MeV$ with about $70 \\;\\rm MeV$ width. We conclude that the former peak is associated with the $f_1(1285)$ and the latter peak is not a genuine resonance but a manifestation of the kinematic effect in the higher energy region caused by the $K^* \\bar{K} + c.c.$ decay mode of the $f_1(1285)$.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2024-01-19T15:35:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chiral unitary approach",
      "higher energy region",
      "clear peak locates",
      "invariant mass distribution",
      "genuine resonance"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}