8 Ağustos 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <dc:creator>CERN İşbirliği</dc:creator>
  <dc:date>2024-08-08</dc:date>
  <dc:description>Using a sample of $448.1×{10}^{6}$ $\psi \left(2S\right)$ 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 ${B}_{{K}^{+}{K}^{-}}=\left(3.072±0.023\left(\mathrm{stat}\right)±0.050\left(\mathrm{syst}\right)\right)×{10}^{-4}$, which is consistent with previous measurements but with significantly improved precision.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/274821</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:274821</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>Physical Review D 110(3)</dc:source>
  <dc:title>Precision measurement of the branching fraction of $J/\psi \to {K}^{+}{K}^{-}$ via $\psi \left(2S\right)\to {\pi }^{+}{\pi }^{-}J/\psi $</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>