J/ψ Physics at BES

BES Collaboration

Chinese Physics C> 1999, Vol. 23> Issue(2) : 97-102

J/ψ Physics at BES

BES Collaboration

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

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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⁺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 f_J,(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.

References

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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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