1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 262835, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "<p>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 $0.2\u20134.0\u00d7{10}^{-4}$, depending on the signal mass hypothesis.</p>", 
  "headline": "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 $\\sqrt{s}=13\\text{}\\text{}\\mathrm{TeV}$", 
  "identifier": 262835, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "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 $\\sqrt{s}=13\\text{}\\text{}\\mathrm{TeV}$", 
  "url": "https://aperta.ulakbim.gov.tr/record/262835"
}