J/ψ Physics at BES

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BES Collaboration. J/ψ Physics at BES[J]. Chinese Physics C, 1999, 23(2): 97-102.
BES Collaboration. J/ψ Physics at BES[J]. Chinese Physics C, 1999, 23(2): 97-102. shu
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Received: 1998-05-14
Revised: 1900-01-01
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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J/ψ Physics at BES

  • Institute of' High Energy Physics, The Chinese Academy of Sciences, Sciences 100039

Abstract: Based on 9.0×106 J/ψ data collected at BES, a systematic physics analysis has been Performed. We confirmed the existence of ξ(2230) in J/ψ→γKK and observed for the first time the non-strange decay modes ξ(2230)→π+π0π0,and pp. The resonance and polarization parameters of f0(980) and f2(1270) were measured. The moment stUdy on J/ψ→γK+K revealed that the controversial fJ,(1710) is composed of two states, a 0++ and a 2++. With the help of PWA method, the spin-Parities for η(1440) and f0(1500) were obtained, and their main decay modes were found.

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