16 Nisan 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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        "affiliation": "CERN", 
        "name": "CERN \u0130\u015fbirli\u011fi"
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    "description": "<p>Based on a sample of $\\left(448.1\u00b12.9\\right)\u00d7{10}^{6}$ $\\psi \\left(3686\\right)$ events collected with the BESIII detector at BEPCII, the decays of $\\psi \\left(3686\\right)\\to {K}^{-}\\Lambda {\\overline{\\Xi }}^{+}+c.c.$ with ${\\overline{\\Xi }}^{+}\\to \\overline{\\Lambda }{\\pi }^{+}$, $\\overline{\\Lambda }\\to \\overline{p}{\\pi }^{+}$ are studied. We investigate the two excited resonances, $\\Xi \\left(1690{\\right)}^{-}$ and $\\Xi \\left(1820{\\right)}^{-}$, which are each observed with large significance ($\\gg 10\\sigma $) in the ${K}^{-}\\Lambda $ invariant mass distributions. A partial wave analysis is performed, and the spin-parities of $\\Xi \\left(1690{\\right)}^{-}$ and $\\Xi \\left(1820{\\right)}^{-}$ are measured to be ${\\frac{1}{2}}^{-}$ and ${\\frac{3}{2}}^{-}$, respectively. The masses, widths, and product branching fractions of $\\Xi \\left(1690{\\right)}^{-}$ and $\\Xi \\left(1820{\\right)}^{-}$ are also measured.</p>", 
    "doi": "10.1103/PhysRevD.109.072008", 
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      "issue": "7", 
      "title": "Physical Review D", 
      "volume": "109"
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    "publication_date": "2024-04-16", 
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    "title": "Study of excited $\\Xi $ states in $\\psi \\left(3686\\right)\\to {K}^{-}\\Lambda {\\overline{\\Xi }}^{+}+c.c.$"
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