24 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>2024-12-24</dc:date>
  <dc:description>Based on $\left(10.09±0.04\right)×{10}^{9}\text{}\text{}J/\psi $ events collected with the BESIII detector operating at the BEPCII collider, a partial wave analysis of the decay $J/\psi \to \varphi {\pi }^{0}\eta $ is performed. We observe for the first time two new structures on the $\varphi \eta $ invariant mass distribution, with significances exceeding $27\sigma $ and $13\sigma $; the first with ${J}^{\mathrm{PC}}={1}^{+-}$, mass $M=\left(1908±6\left(\mathrm{stat}\right){\text{}}_{-4}^{+8}\left(\mathrm{sys}\right)\right)\text{}\text{}\mathrm{MeV}/{c}^{2}$, and width $\Gamma =\left(175±13\left(\mathrm{stat}\right){\text{}}_{-16}^{+7}\left(\mathrm{sys}\right)\right)\text{}\text{}\mathrm{MeV}$, the second with ${J}^{\mathrm{PC}}={1}^{--}$, mass $M=\left(1992±12\left(\mathrm{stat}\right){\text{}}_{-6}^{+15}\left(\mathrm{sys}\right)\right)\text{}\text{}\mathrm{MeV}/{c}^{2}$, and width $\Gamma =\left(132±\phantom{\rule{0ex}{0ex}}22\left(\mathrm{stat}\right){\text{}}_{-4}^{+17}\left(\mathrm{sys}\right)\right)\text{}\text{}\mathrm{MeV}$. These measurements provide important input for the strangeonium spectrum. In addition, the ${f}_{0}\left(980\right)-{a}_{0}\left(980{\right)}^{0}$ mixing signal in $J/\psi \to \varphi {f}_{0}\left(980\right)\to \varphi {a}_{0}\left(980{\right)}^{0}$ and the corresponding electromagnetic decay $J/\psi \to \varphi {a}_{0}\left(980{\right)}^{0}$ are measured with improved precision, providing crucial information to understand the nature of ${a}_{0}\left(980{\right)}^{0}$ and ${f}_{0}\left(980\right)$.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/274485</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:274485</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>Study of the decay $J/\psi \to \varphi {\pi }^{0}\eta $</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>