6 Aralık 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/274533</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Search For Cp Violation In     ${\Text{D}}^{0}\To {\Text{K}}_{\Text{S}}^{0}{\Text{K}}_{\Text{S}}^{0}$   Decays In Proton–Proton Collisions At     $\Sqrt{S}=13\Phantom{\Rule{0.166667Em}{0Ex}}\Text{Te}\Phantom{\Rule{-0.80002Pt}{0Ex}}\Text{V}$</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-12-06</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/274533</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1140/epjc/s10052-024-13244-0</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;A search is reported for charge-parity     $\mathrm{CP}$   violation in     ${\text{D}}^{0}\to {\text{K}}_{\text{S}}^{0}{\text{K}}_{\text{S}}^{0}$   decays, using data collected in proton–proton collisions at     $\sqrt{s}=13\phantom{\rule{0.166667em}{0ex}}\text{Te}\phantom{\rule{-0.80002pt}{0ex}}\text{V}$   recorded by the CMS experiment in 2018. The analysis uses a dedicated data set that corresponds to an integrated luminosity of 41.6    $\phantom{\rule{0.166667em}{0ex}}{\text{fb}}^{-1}$  , which consists of about 10 billion events containing a pair of b hadrons, nearly all of which decay to charm hadrons. The flavor of the neutral D meson is determined by the pion charge in the reconstructed decays     $\text{D}_{}^{\ast +}\to {\text{D}}^{0}{\pi }^{+}$   and     $\text{D}_{}^{\ast -}\to {\overline{\text{D}}}^{0}{\pi }^{-}$  . The     $\mathrm{CP}$   asymmetry in     ${\text{D}}^{0}\to {\text{K}}_{\text{S}}^{0}{\text{K}}_{\text{S}}^{0}$   is measured to be     ${A}_{\mathrm{CP}}\left({\text{K}}_{\text{S}}^{0}{\text{K}}_{\text{S}}^{0}\right)=\left(6.2±3.0±0.2±0.8\right)%$  , where the three uncertainties represent the statistical uncertainty, the systematic uncertainty, and the uncertainty in the measurement of the     $\mathrm{CP}$   asymmetry in the     ${\text{D}}^{0}\to {\text{K}}_{\text{S}}^{0}{\pi }^{+}{\pi }^{-}$   decay. This is the first     $\mathrm{CP}$   asymmetry measurement by CMS in the charm sector as well as the first to utilize a fully hadronic final state.&lt;/p&gt;</description>
  </descriptions>
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