5 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

DataCite XML

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/275157</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Study Of The ${F}_{0}\Left(980\Right)$ And ${F}_{0}\Left(500\Right)$ Scalar Mesons Through The Decay ${D}_{S}^{+}\To {\Pi }^{+}{\Pi }^{-}{E}^{+}{\Nu }_{E}$</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-04-05</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/275157</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1103/PhysRevLett.132.141901</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 ${e}^{+}{e}^{-}$ collision data corresponding to an integrated luminosity of $7.33\text{}\text{}{\mathrm{fb}}^{-1}$ recorded by the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we present an analysis of the decay ${D}_{s}^{+}\to {\pi }^{+}{\pi }^{-}{e}^{+}{\nu }_{e}$, where the ${D}_{s}^{+}$ is produced via the process ${e}^{+}{e}^{-}\to {D}_{s}^{*±}{D}_{s}^{\mp }$. We observe the ${f}_{0}\left(980\right)$ in the ${\pi }^{+}{\pi }^{-}$ system and the branching fraction of the decay ${D}_{s}^{+}\to {f}_{0}\left(980\right){e}^{+}{\nu }_{e}$ with ${f}_{0}\left(980\right)\to {\pi }^{+}{\pi }^{-}$ measured to be $\left(1.72±0.1{3}_{\mathrm{stat}}±0.1{0}_{\mathrm{syst}}\right)×{10}^{-3}$, where the uncertainties are statistical and systematic, respectively. The dynamics of the ${D}_{s}^{+}\to {f}_{0}\left(980\right){e}^{+}{\nu }_{e}$ decay are studied with the simple pole parametrization of the hadronic form factor and the Flatté formula describing the ${f}_{0}\left(980\right)$ in the differential decay rate, and the product of the form factor ${f}_{+}^{{f}_{0}}\left(0\right)$ and the $c\to s$ Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{cs}|$ is determined for the first time to be ${f}_{+}^{{f}_{0}}\left(0\right)|{V}_{cs}|=0.504±0.01{7}_{\mathrm{stat}}±0.03{5}_{\mathrm{syst}}$. Furthermore, the decay ${D}_{s}^{+}\to {f}_{0}\left(500\right){e}^{+}{\nu }_{e}$ is searched for the first time but no signal is found. The upper limit on the branching fraction of ${D}_{s}^{+}\to {f}_{0}\left(500\right){e}^{+}{\nu }_{e}$, ${f}_{0}\left(500\right)\to {\pi }^{+}{\pi }^{-}$ decay is set to be $3.3×{10}^{-4}$ at 90% confidence level.&lt;/p&gt;</description>
  </descriptions>
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