30 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.109.072018", 
  "abstract": "<p>Based on $\\left(2712.4\u00b114.1\\right)\u00d7{10}^{6}$ $\\psi \\left(3686\\right)$ events collected with the BESIII detector, we study the decays ${h}_{c}\\to 3\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}$, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\omega $, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}\\eta $, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\eta $, and ${h}_{c}\\to p\\overline{p}$ via $\\psi \\left(3686\\right)\\to \\phantom{\\rule{0ex}{0ex}}{\\pi }^{0}{h}_{c}$. The decay channel ${h}_{c}\\to 3\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}$ is observed for the first time, and its branching fraction is determined to be $\\left(9.28\u00b11.14\u00b10.77\\right)\u00d7{10}^{-3}$, where the first uncertainty is statistical and the second is systematic. In addition, first evidence is found for the modes ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}\\eta $ and ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\omega $ with significances of $4.8\\sigma $ and $4.7\\sigma $, and their branching fractions are determined to be $\\left(7.55\u00b11.51\u00b10.77\\right)\u00d7{10}^{-3}$ and $\\left(4.00\u00b10.86\u00b10.35\\right)\u00d7{10}^{-3}$, respectively. No significant signals of ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\eta $ and ${h}_{c}\\to p\\overline{p}$ are observed, and the upper limits of the branching fractions of these decays are determined to be $&lt;6.19\u00d7{10}^{-4}$ and $&lt;4.40\u00d7{10}^{-5}$ at the 90% confidence level, respectively.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "275103", 
  "issue": "7", 
  "issued": {
    "date-parts": [
      [
        2024, 
        4, 
        30
      ]
    ]
  }, 
  "title": "Study of ${h}_{c}\\to 3\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}$, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\omega $, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right){\\pi }^{0}\\eta $, ${h}_{c}\\to 2\\left({\\pi }^{+}{\\pi }^{-}\\right)\\eta $, and ${h}_{c}\\to p\\overline{p}$", 
  "type": "article-journal", 
  "volume": "109"
}