1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

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    "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>", 
    "doi": "10.1103/PhysRevD.105.012006", 
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      "issue": "1", 
      "title": "Physical Review D", 
      "volume": "105"
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    "publication_date": "2022-01-01", 
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    "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 $\\sqrt{s}=13\\text{}\\text{}\\mathrm{TeV}$"
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