15 Ekim 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/274651</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Observation Of The     ${\Lambda }_{\Text{B}}^{0}\To \Text{J}/\Psi {\Xi }^{-}{\Text{K}}^{+}$   Decay</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-10-15</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/274651</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1140/epjc/s10052-024-13114-9</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 proton–proton collision data corresponding to an integrated luminosity of     $140\phantom{\rule{0.333333em}{0ex}}{\text{fb}}^{-1}$   collected by the CMS experiment at     $\sqrt{s}=13\phantom{\rule{0.166667em}{0ex}}\text{Te}\phantom{\rule{-0.80002pt}{0ex}}\text{V}$  , the     ${\Lambda }_{\text{b}}^{0}\to \text{J}/\psi {\Xi }^{-}{\text{K}}^{+}$   decay is observed for the first time, with a statistical significance exceeding 5 standard deviations. The relative branching fraction, with respect to the     ${\Lambda }_{\text{b}}^{0}\to \psi \left(2\text{S}\right)\Lambda $   decay, is measured to be     $B\left({\Lambda }_{\text{b}}^{0}\to \text{J}/\psi {\Xi }^{-}{\text{K}}^{+}\right)/B\left({\Lambda }_{\text{b}}^{0}\to \psi \left(2\text{S}\right)\Lambda \right)=\left[3.38±1.02±0.61±0.03\right]%$  , where the first uncertainty is statistical, the second is systematic, and the third is related to the uncertainties in     $B\left(\psi \left(2\text{S}\right)\to \text{J}/\psi {\pi }^{+}{\pi }^{-}\right)$   and     $B\left({\Xi }^{-}\to \Lambda {\pi }^{-}\right)$  .&lt;/p&gt;</description>
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