8 Ağustos 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.110.032006", 
  "abstract": "<p>Using a sample of $448.1\u00d7{10}^{6}$ $\\psi \\left(2S\\right)$ events collected with the BESIII detector, we perform a study of the decay $J/\\psi \\to {K}^{+}{K}^{-}$ via $\\psi \\left(2S\\right)\\to {\\pi }^{+}{\\pi }^{-}J/\\psi $. The branching fraction of $J/\\psi \\to {K}^{+}{K}^{-}$ is determined to be ${B}_{{K}^{+}{K}^{-}}=\\left(3.072\u00b10.023\\left(\\mathrm{stat}\\right)\u00b10.050\\left(\\mathrm{syst}\\right)\\right)\u00d7{10}^{-4}$, which is consistent with previous measurements but with significantly improved precision.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "274821", 
  "issue": "3", 
  "issued": {
    "date-parts": [
      [
        2024, 
        8, 
        8
      ]
    ]
  }, 
  "title": "Precision measurement of the branching fraction of $J/\\psi \\to {K}^{+}{K}^{-}$ via $\\psi \\left(2S\\right)\\to {\\pi }^{+}{\\pi }^{-}J/\\psi $", 
  "type": "article-journal", 
  "volume": "110"
}