1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.106.072004", 
  "abstract": "<p>By analyzing $\\left(448.1\u00b12.9\\right)\u00d7{10}^{6}\\text{}\\text{}\\psi \\left(3686\\right)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of ${\\chi }_{cJ}\\to \\Lambda \\overline{\\Lambda }\\eta $ ($J=0$, 1, and 2) are observed for the first time with statistical significances of $13.9\\sigma $, $6.7\\sigma $, and $8.2\\sigma $, respectively. The product branching fractions of $\\psi \\left(3686\\right)\\to \\gamma {\\chi }_{cJ}$ and ${\\chi }_{cJ}\\to \\Lambda \\overline{\\Lambda }\\eta $ are measured. Dividing by the world averages of the branching fractions of $\\psi \\left(3686\\right)\\to \\phantom{\\rule{0ex}{0ex}}\\gamma {\\chi }_{cJ}$, the branching fractions of ${\\chi }_{cJ}\\to \\Lambda \\overline{\\Lambda }\\eta $ decays are determined to be $\\left(2.31\u00b10.30\u00b10.21\\right)\u00d7{10}^{-4}$, $\\left(5.86\u00b11.38\u00b10.68\\right)\u00d7{10}^{-5}$, and $\\left(1.05\u00b10.21\u00b10.15\\right)\u00d7{10}^{-4}$ for $J=0$, 1 and 2, respectively, where the first uncertainties are statistical and the second systematic.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "262531", 
  "issue": "7", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Observation of ${\\chi }_{cJ}\\to \\Lambda \\overline{\\Lambda }\\eta $", 
  "type": "article-journal", 
  "volume": "106"
}