26 Aralık 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>2024-12-26</dc:date>
  <dc:description>We report the first amplitude analyses of the decays ${D}^{0}\to {\pi }^{+}{\pi }^{-}\eta $ and ${D}^{+}\to {\pi }^{+}{\pi }^{0}\eta $ using a data sample taken with the BESIII detector at the center-of-mass energy of 3773 MeV, corresponding to an integrated luminosity of $7.9\text{}\text{}{\mathrm{fb}}^{-1}$. The contribution from the process ${D}^{0\left(+\right)}\to {a}_{0}\left(980{\right)}^{+}{\pi }^{-\left(0\right)}$ is significantly larger than the ${D}^{0\left(+\right)}\to {a}_{0}\left(980{\right)}^{-\left(0\right)}{\pi }^{+}$ contribution. The ratios $B\left({D}^{0}\to {a}_{0}\left(980{\right)}^{+}{\pi }^{-}\right)/B\left({D}^{0}\to {a}_{0}\left(980{\right)}^{-}{\pi }^{+}\right)$ and $B\left({D}^{+}\to {a}_{0}\left(980{\right)}^{+}{\pi }^{0}\right)/B\left({D}^{+}\to {a}_{0}\left(980{\right)}^{0}{\pi }^{+}\right)$ are measured to be ${7.5}_{-0.8\mathrm{stat}}^{+2.5}±{1.7}_{\mathrm{syst}}$ and $2.6±{0.6}_{\mathrm{stat}}±\phantom{\rule{0ex}{0ex}}{0.3}_{\mathrm{syst}}$, respectively. The measured ${D}^{0}$ ratio disagrees with the theoretical predictions by orders of magnitudes, thus implying a substantial contribution from final-state interactions.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/274481</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:274481</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>Physical Review D 110(11)</dc:source>
  <dc:title>Observation of $D\to {a}_{0}\left(980\right)\pi $ in the decays ${D}^{0}\to {\pi }^{+}{\pi }^{-}\eta $ and ${D}^{+}\to {\pi }^{+}{\pi }^{0}\eta $</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>