2 Aralık 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.110.112001", 
  "abstract": "<p></p><p>By analyzing ${e}^{+}{e}^{-}$ annihilation data corresponding to an integrated luminosity of $7.93\\text{}\\text{}{\\mathrm{fb}}^{-1}$, collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we search for the semileptonic decays ${D}^{0}\\to {K}^{-}\\eta {e}^{+}{\\nu }_{e}$, ${D}^{+}\\to {K}_{S}^{0}\\eta {e}^{+}{\\nu }_{e}$ and ${D}^{+}\\to \\eta \\eta {e}^{+}{\\nu }_{e}$ for the first time. We present evidence for ${D}^{0}\\to {K}^{-}\\eta {e}^{+}{\\nu }_{e}$ with a significance of $3.3\\sigma $. The branching fraction of ${D}^{0}\\to {K}^{-}\\eta {e}^{+}{\\nu }_{e}$ is measured to be $\\left(0.8{4}_{-0.34}^{+0.29}\u00b10.22\\right)\u00d7{10}^{-4}$. No significant signals are observed for the decays ${D}^{+}\\to {K}_{S}^{0}\\eta {e}^{+}{\\nu }_{e}$ and ${D}^{+}\\to \\eta \\eta {e}^{+}{\\nu }_{e}$ and we set the upper limits on their branching fractions.</p><p></p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "274549", 
  "issue": "11", 
  "issued": {
    "date-parts": [
      [
        2024, 
        12, 
        2
      ]
    ]
  }, 
  "title": "Search for ${D}^{0}\\to {K}^{-}\\eta {e}^{+}{\\nu }_{e}$, ${D}^{+}\\to {K}_{S}^{0}\\eta {e}^{+}{\\nu }_{e}$ and ${D}^{+}\\to \\eta \\eta {e}^{+}{\\nu }_{e}$ decays", 
  "type": "article-journal", 
  "volume": "110"
}