30 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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        "name": "CERN \u0130\u015fbirli\u011fi"
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    "description": "<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>", 
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      "issue": "7", 
      "title": "Physical Review D", 
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    "publication_date": "2024-04-30", 
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    "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 ${h}_{c}\\to p\\overline{p}$"
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