21 Ekim 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 274635, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2024-10-21", 
  "description": "<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>", 
  "headline": "Search for $X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1,2}$", 
  "identifier": 274635, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Search for $X\\left(3872\\right)\\to {\\pi }^{0}{\\pi }^{0}{\\chi }_{c1,2}$", 
  "url": "https://aperta.ulakbim.gov.tr/record/274635"
}