1 Ocak 2022 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>2022-01-01</dc:date>
  <dc:description>This paper presents a search for decays of the Higgs boson with a mass of 125 GeV into a pair of new pseudoscalar particles, $H\to aa$, where one $a$-boson decays into a $b$-quark pair and the other into a muon pair. The search uses $139\text{}\text{}{\mathrm{fb}}^{-1}$ of proton-proton collision data at a center-of-mass energy of $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$ recorded between 2015 and 2018 by the ATLAS experiment at the LHC. A narrow dimuon resonance is searched for in the invariant mass spectrum between 16 GeV and 62 GeV. The largest excess of events above the Standard Model backgrounds is observed at a dimuon invariant mass of 52 GeV and corresponds to a local (global) significance of $3.3\sigma $ ($1.7\sigma $). Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to the $bb\mu \mu $ final state, $B\left(H\to aa\to bb\mu \mu \right)$, and are in the range $0.2–4.0×{10}^{-4}$, depending on the signal mass hypothesis.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/262835</dc:identifier>
  <dc:identifier>oai:aperta.ulakbim.gov.tr:262835</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 105(1)</dc:source>
  <dc:title>Search for Higgs boson decays into a pair of pseudoscalar particles in the $bb\mu \mu $ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>