1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevLett.129.212002", 
  "abstract": "<p>The radiative hyperon decay $\\Lambda \\to n\\gamma $ is studied using $\\left(10087\u00b144\\right)\u00d7{10}^{6}\\text{}\\text{}J/\\psi $ events collected with the BESIII detector operating at BEPCII. The absolute branching fraction of the decay $\\Lambda \\to n\\gamma $ is determined to be $\\left(0.832\u00b10.03{8}_{\\mathrm{stat}}\u00b10.05{4}_{\\mathrm{syst}}\\right)\u00d7{10}^{-3}$, which is a factor of 2.1 lower and 5.6 standard deviations different than the previous measurement. By analyzing the joint angular distribution of the decay products, the first determination of the decay asymmetry ${\\alpha }_{\\gamma }$ is reported with a value of $-0.16\u00b10.1{0}_{\\mathrm{stat}}\u00b10.0{5}_{\\mathrm{syst}}$.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physical Review Letters", 
  "id": "262487", 
  "issue": "21", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Measurement of the Absolute Branching Fraction and Decay Asymmetry of $\\Lambda \\to n\\gamma $", 
  "type": "article-journal", 
  "volume": "129"
}