1 Ocak 2022 Dergi makalesi Açık Erişim

CERN İşbirliği

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        "name": "CERN \u0130\u015fbirli\u011fi"
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    "description": "<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>", 
    "doi": "10.1103/PhysRevLett.129.212002", 
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      "issue": "21", 
      "title": "Physical Review Letters", 
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    "publication_date": "2022-01-01", 
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    "title": "Measurement of the Absolute Branching Fraction and Decay Asymmetry of $\\Lambda \\to n\\gamma $"
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