15 Şubat 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>2024-02-15</dc:date>
  <dc:description>A search for the associated production of a heavy resonance with a top-quark or a top-antitop-quark pair, and decaying into a     $t\overline{t}$   pair is presented. The search uses the data recorded by the ATLAS detector in pp collisions at     $\sqrt{s}=13$       $\text{TeV}$   at the Large Hadron Collider during the years 2015–2018, corresponding to an integrated luminosity of 139     ${\text{fb}}^{-1}$  . Events containing exactly one electron or muon are selected. The two hadronically decaying top quarks from the resonance decay are reconstructed using jets clustered with a large radius parameter of     $R=1$  . The invariant mass spectrum of the two top quark candidates is used to search for a resonance signal in the range of 1.0     $\text{TeV}$   to 3.2     $\text{TeV}$  . The presence of a signal is examined using an approach with minimal model dependence followed by a model-dependent interpretation. No significant excess is observed over the background expectation. Upper limits on the production cross section times branching ratio at 95% confidence level are provided for a heavy     ${Z}^{\prime }$   boson based on a simplified model, for     ${Z}^{\prime }$   mass between 1.0     $\text{TeV}$   and 3.0     $\text{TeV}$  . The observed (expected) limits range from 21 (14) fb to 119 (86) fb depending on the choice of model parameters.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/275253</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:275253</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>European Physical Journal C 84(2)</dc:source>
  <dc:title>Search for top-philic heavy resonances in pp collisions at     $\sqrt{s}=13$       $\text{TeV}$   with the ATLAS detector</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>