21 Ekim 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.110.072015", 
  "abstract": "<p>Using $10.1\\text{}\\text{}{\\mathrm{fb}}^{-1}$ of ${e}^{+}{e}^{-}$ collision data collected by the BESIII detector with center-of-mass energies between 4.15 GeV and 4.30 GeV, we search for the decays $X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1,2}$, where the $X\\left(3872\\right)$ is produced in ${e}^{+}{e}^{-}\\to \\gamma X\\left(3872\\right)$. No evidence above $3\\sigma $ is found for either decay. Upper limits at the 90% CL on the branching fractions of $X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1,2}$ normalized to the branching fraction of $X\\left(3872\\right)\\to {\\pi }^{+}{\\pi }^{-}J/\\psi $ are set to be $B\\left(X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1}\\right)/B\\left(X\\left(3872\\right)\\to {\\pi }^{+}{\\pi }^{-}J/\\psi \\right)&lt;1.1$ and $B\\left(X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c2}\\right)/B\\left(X\\left(3872\\right)\\to {\\pi }^{+}{\\pi }^{-}J/\\psi \\right)&lt;0.5$, taking into account both statistical and systematic uncertainties.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "274635", 
  "issue": "7", 
  "issued": {
    "date-parts": [
      [
        2024, 
        10, 
        21
      ]
    ]
  }, 
  "title": "Search for $X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1,2}$", 
  "type": "article-journal", 
  "volume": "110"
}