15 Ekim 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>2024-10-15</dc:date>
  <dc:description>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     $B\left({\Xi }^{-}\to \Lambda {\pi }^{-}\right)$  .</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/274651</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:274651</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>European Physical Journal C 84(10)</dc:source>
  <dc:title>Observation of the     ${\Lambda }_{\text{b}}^{0}\to \text{J}/\psi {\Xi }^{-}{\text{K}}^{+}$   decay</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>