30 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/275107</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Observation Of The Singly Cabibbo-Suppressed Decay ${\Lambda }_{C}^{+}\To {\Sigma }^{-}{K}^{+}{\Pi }^{+}$</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-04-30</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/275107</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1103/PhysRevD.109.L071103</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;The singly Cabibbo-suppressed decay ${\Lambda }_{c}^{+}\to {\Sigma }^{-}{K}^{+}{\pi }^{+}$ is observed for the first time with a statistical significance of $5.4\sigma $ by using $4.5\text{}\text{}{\mathrm{fb}}^{-1}$ of ${e}^{+}{e}^{-}$ collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. The absolute branching fraction of ${\Lambda }_{c}^{+}\to {\Sigma }^{-}{K}^{+}{\pi }^{+}$ is measured to be $\left(3.8±{1.2}_{\mathrm{stat}}±{0.2}_{\mathrm{syst}}\right)×{10}^{-4}$ in a model-independent approach. This is the first observation of a Cabibbo-suppressed ${\Lambda }_{c}^{+}$ decay involving ${\Sigma }^{-}$ in the final state. The ratio of branching fractions between ${\Lambda }_{c}^{+}\to {\Sigma }^{-}{K}^{+}{\pi }^{+}$ and the Cabibbo-favored decay ${\Lambda }_{c}^{+}\to {\Sigma }^{-}{\pi }^{+}{\pi }^{+}$ is observed to be $\left(0.4±0.1\right){s}_{c}^{2}$, where ${s}_{c}\equiv \mathrm{sin}{\theta }_{c}=0.2248$ with ${\theta }_{c}$ the Cabibbo mixing angle.&lt;/p&gt;</description>
  </descriptions>
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