1 Ocak 2023 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>2023-01-01</dc:date>
  <dc:description>We search for an axion-like particle (ALP) a through the process $\psi \left(3686\right)\to {\pi }^{+}{\pi }^{-}J/\psi $, $J/\psi \to \gamma a$, $a\to \gamma \gamma $ in a data sample of $\left(2.71±0.01\right)×{10}^{9}$ $\psi \left(3686\right)$ events collected by the BESIII detector. No significant ALP signal is observed over the expected background, and the upper limits on the branching fraction of the decay $J/\psi \to \gamma a$ and the ALP-photon coupling constant ${g}_{a\gamma \gamma }$ are set at 95% confidence level in the mass range of $0.165\le {m}_{a}\le 2.84\phantom{\rule{0.25em}{0ex}}\text{GeV}/{c}^{2}$. The limits on $B\left(J/\psi \to \gamma a\right)$ range from $8.3×{10}^{-8}$ to $1.8×{10}^{-6}$ over the search region, and the constraints on the ALP-photon coupling are the most stringent to date for $0.165\le {m}_{a}\le 1.468\phantom{\rule{0.25em}{0ex}}\text{GeV}/{c}^{2}$.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/264890</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:264890</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>Physics Letters B 838 C</dc:source>
  <dc:title>Search for an axion-like particle in radiative / Decays</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>