1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>CERN İşbirliği</dc:creator>
  <dc:date>2022-01-01</dc:date>
  <dc:description>By analyzing $\left(448.1±2.9\right)×{10}^{6}\text{}\text{}\psi \left(3686\right)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of ${\chi }_{cJ}\to \Lambda \overline{\Lambda }\eta $ ($J=0$, 1, and 2) are observed for the first time with statistical significances of $13.9\sigma $, $6.7\sigma $, and $8.2\sigma $, respectively. The product branching fractions of $\psi \left(3686\right)\to \gamma {\chi }_{cJ}$ and ${\chi }_{cJ}\to \Lambda \overline{\Lambda }\eta $ are measured. Dividing by the world averages of the branching fractions of $\psi \left(3686\right)\to \phantom{\rule{0ex}{0ex}}\gamma {\chi }_{cJ}$, the branching fractions of ${\chi }_{cJ}\to \Lambda \overline{\Lambda }\eta $ decays are determined to be $\left(2.31±0.30±0.21\right)×{10}^{-4}$, $\left(5.86±1.38±0.68\right)×{10}^{-5}$, and $\left(1.05±0.21±0.15\right)×{10}^{-4}$ for $J=0$, 1 and 2, respectively, where the first uncertainties are statistical and the second systematic.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/262531</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:262531</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 106(7)</dc:source>
  <dc:title>Observation of ${\chi }_{cJ}\to \Lambda \overline{\Lambda }\eta $</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>