29 Ocak 2024 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>2024-01-29</dc:date>
  <dc:description>With a data sample corresponding to an integrated luminosity of $11.5\text{}\text{}{\mathrm{fb}}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring, for the first time the light hadron decay ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}\eta $ is searched for. While no significant signal is observed, the upper limits at the 90% confidence level for $\sigma \left[{e}^{+}{e}^{-}\to \gamma {\chi }_{c1}\left(3872\right)\right]B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}\eta \right]$ at center of mass energies from 4.13 GeV to 4.34 GeV are determined. By normalizing to the ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}J/\psi $ decay channel, a 90% confidence level upper limit for the branching fraction ratio $R=B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}\eta \right]/B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}J/\psi \right]&lt;0.12$ is given. These measurements provide important inputs for understanding the internal structure of the ${\chi }_{c1}\left(3872\right)$ resonance.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/275289</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:275289</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 109(1)</dc:source>
  <dc:title>Search for the light hadron decay ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}\eta $</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>