8 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/275155</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Search For The Decay ${\Chi }_{C1}\Left(3872\Right)\To {\Pi }^{+}{\Pi }^{-}{\Chi }_{C1}$</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-04-08</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/275155</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1103/PhysRevD.109.L071101</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Using a data sample corresponding to an integrated luminosity of $10.9\text{}\text{}{\mathrm{fb}}^{-1}$ collected at center-of-mass energies from 4.16 to 4.34 GeV with the BESIII detector, we search for the decay ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}{\chi }_{c1}$ in the radiative production ${e}^{+}{e}^{-}\to \gamma {\chi }_{c1}\left(3872\right)$. No significant signal is observed, and the ratio for the branching fraction of ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}{\chi }_{c1}$ to ${\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}J/\psi $ is measured as $R\equiv \frac{B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}{\chi }_{c1}\right]}{B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}J/\psi \right]}&amp;lt;0.18$ at 90% confidence level. An upper limit on the product of the cross section $\sigma \left[{e}^{+}{e}^{-}\to \gamma {\chi }_{c1}\left(3872\right)\right]$ and the branching fraction $B\left[{\chi }_{c1}\left(3872\right)\to {\pi }^{+}{\pi }^{-}{\chi }_{c1}\right]$ at each center-of-mass energy is also given. These measurements favor the nonconventional charmonium nature of the ${\chi }_{c1}\left(3872\right)$ state.&lt;/p&gt;</description>
  </descriptions>
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