30 Eylül 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 274673, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2024-09-30", 
  "description": "<p>Analyzing ${e}^{+}{e}^{-}$ collision data corresponding to an integrated luminosity of $7.33\\text{}\\text{}{\\mathrm{fb}}^{-1}$ collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we measure the branching fraction of the semileptonic decay ${D}_{s}^{+}\\to {K}^{0}{e}^{+}{\\nu }_{e}$ to be $\\left(2.98\u00b10.2{3}_{\\mathrm{stat}}\u00b10.1{2}_{\\mathrm{syst}}\\right)\u00d7{10}^{-3}$. Based on fit to the partial decay rates in various ${q}^{2}$ intervals, the product value of ${D}_{s}^{+}\\to {K}^{0}$ hadronic form factor and Cabibbo-Kobayashi-Maskawa element is measured to be ${f}_{+}^{{K}^{0}}\\left(0\\right)|{V}_{cd}|=0.143\u00b10.01{1}_{\\mathrm{stat}}\u00b10.00{3}_{\\mathrm{syst}}$. With $|{V}_{cd}|=0.22486\u00b10.00067$ as an input, the hadronic form factor is evaluated to be ${f}_{+}^{{K}^{0}}\\left(0\\right)=0.636\u00b10.04{9}_{\\mathrm{stat}}\u00b10.01{3}_{\\mathrm{syst}}$. The branching fraction and form factor measurements are factors of 1.6 and 1.7 more precise than the previous world averages, respectively.</p>", 
  "headline": "Improved measurement of the semileptonic decay ${D}_{s}^{+}\\to {K}^{0}{e}^{+}{\\nu }_{e}$", 
  "identifier": 274673, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Improved measurement of the semileptonic decay ${D}_{s}^{+}\\to {K}^{0}{e}^{+}{\\nu }_{e}$", 
  "url": "https://aperta.ulakbim.gov.tr/record/274673"
}