30 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 275107, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2024-04-30", 
  "description": "<p>The singly Cabibbo-suppressed decay ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{K}^{+}{\\pi }^{+}$ is observed for the first time with a statistical significance of $5.4\\sigma $ by using $4.5\\text{}\\text{}{\\mathrm{fb}}^{-1}$ of ${e}^{+}{e}^{-}$ collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. The absolute branching fraction of ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{K}^{+}{\\pi }^{+}$ is measured to be $\\left(3.8\u00b1{1.2}_{\\mathrm{stat}}\u00b1{0.2}_{\\mathrm{syst}}\\right)\u00d7{10}^{-4}$ in a model-independent approach. This is the first observation of a Cabibbo-suppressed ${\\Lambda }_{c}^{+}$ decay involving ${\\Sigma }^{-}$ in the final state. The ratio of branching fractions between ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{K}^{+}{\\pi }^{+}$ and the Cabibbo-favored decay ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{\\pi }^{+}{\\pi }^{+}$ is observed to be $\\left(0.4\u00b10.1\\right){s}_{c}^{2}$, where ${s}_{c}\\equiv \\mathrm{sin}{\\theta }_{c}=0.2248$ with ${\\theta }_{c}$ the Cabibbo mixing angle.</p>", 
  "headline": "Observation of the singly Cabibbo-suppressed decay ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{K}^{+}{\\pi }^{+}$", 
  "identifier": 275107, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Observation of the singly Cabibbo-suppressed decay ${\\Lambda }_{c}^{+}\\to {\\Sigma }^{-}{K}^{+}{\\pi }^{+}$", 
  "url": "https://aperta.ulakbim.gov.tr/record/275107"
}