6 Ağustos 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <dc:creator>CERN İşbirliği</dc:creator>
  <dc:date>2024-08-06</dc:date>
  <dc:description>We search for the diphoton decay of a light pseudoscalar axionlike particle, $a$, in radiative $J/\psi $ decays, using ${10}^{10}\text{}J/\psi $ events collected with the BESIII detector. We find no evidence of a signal and set upper limits at the 95% confidence level on the product branching fraction $B\left(J/\psi \to \gamma a\right)×B\left(a\to \gamma \gamma \right)$ and the axionlike particle photon coupling constant ${g}_{a\gamma \gamma }$ in the ranges of $\left(3.7–48.5\right)×{10}^{-8}$ and $\left(2.2–101.8\right)×{10}^{-4}\text{}\text{}{\mathrm{GeV}}^{-1}$, respectively, for $0.18\le {m}_{a}\le 2.85\text{}\text{}\mathrm{GeV}/{c}^{2}$. These are the most stringent limits to date in this mass region.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/274831</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:274831</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(3)</dc:source>
  <dc:title>Search for diphoton decays of an axionlike particle in radiative $J/\psi $ decays</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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