Moment Analysis of the Wide Resonance θ(1720) in J/ψ Radiative Decay

Yu Hong; Shen Qixing; Zhu Yucan; Zheng Zhipeng; Cheng Zhengdong

Chinese Physics C> 1992, Vol. 16> Issue(S3) : 267-276

Moment Analysis of the Wide Resonance θ(1720) in J/ψ Radiative Decay

Institute of High Energy Physics, the Chinese Academy Sciences. Beijing, China

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Abstract：
In this paper, the structure of the wide resonance θ (1720) produced in J/ψ radiative decays is studied by using the moment analysis. Since the f₂'(1525) and θ (1720) resonances overlap in this mass region, two three-state coupling structure modes 2⁺⁺ (f₂'(1525)) + 0⁺⁺ + 0⁺⁺ and 2⁺⁺(f₂'(1525)) + 0⁺⁺ + 2⁺⁺ are discussed. This is helpful to make clear the structure of the wide resonance θ (1720),determine their masses,widths, spins and other important properties of the two resonance states, G(1590) and f₂(1720).

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[11]	CHEN Shenjian , YAN Wuguang , LI Weiguo . Moment Method for Spin Analysis of the Pseudoscalar Pair Produced in the Radiative J/ψ Decay. Chinese Physics C, 1993, 17(11): 961-970.
[12]	YU Hong , SHEN Qi-Xing , ZHU Yu-Can , ZHENG Zhi-Peng , CHENG Zheng-Dong . Studies of the Wide Resonance θ(1720) in J/ψ Hadronic Decays. Chinese Physics C, 1993, 17(7): 601-604.
[13]	Yu Hong , Shen Qixing , Zhu Yucan , Zheng Zhipeng , Cheng Zhengdong . Studies of the θ(1720) Wide Resonance in J/ψ Hadronic Decays. Chinese Physics C, 1993, 17(S2): 143-146.
[14]	BES Collaboration . Experimental Study of f₂(1270) in the J/ψ Hadronic Decay. Chinese Physics C, 1992, 16(S4): 385-393.
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[18]	YU Hong , SHEN Qi-Xing , ZHU Yu-Can , ZHENG Zhi-Ping , CHENG Zheng-Dong . Moment Analysis of the wide Resonance θ(1720) in J/ψ Radiative Decay. Chinese Physics C, 1992, 16(9): 807-815.
[19]	YU Hong , SHEN Qi-Xing . THE MOMENT ANALYSIS FOR THE J/ψ HADRONIC DECAY PROCESS. Chinese Physics C, 1990, 14(10): 875-881.
[20]	Yu Hong , Shen Qixing . A Moment Analysis for the J/ψ Hadronic Decay Processes. Chinese Physics C, 1990, 14(S4): 353-360.

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Yu Hong, Shen Qixing, Zhu Yucan, Zheng Zhipeng and Cheng Zhengdong. Moment Analysis of the Wide Resonance θ(1720) in J/ψ Radiative Decay[J]. Chinese Physics C, 1992, 16(S3): 267-276.

Yu Hong, Shen Qixing, Zhu Yucan, Zheng Zhipeng and Cheng Zhengdong. Moment Analysis of the Wide Resonance θ(1720) in J/ψ Radiative Decay[J]. Chinese Physics C, 1992, 16(S3): 267-276. shu

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Received: 1991-11-29

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Supported by the National Natural Science Foundation of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

Moment Analysis of the Wide Resonance θ(1720) in J/ψ Radiative Decay

Institute of High Energy Physics, the Chinese Academy Sciences. Beijing, China

Received Date: 1991-11-29

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: In this paper, the structure of the wide resonance θ (1720) produced in J/ψ radiative decays is studied by using the moment analysis. Since the f₂'(1525) and θ (1720) resonances overlap in this mass region, two three-state coupling structure modes 2⁺⁺ (f₂'(1525)) + 0⁺⁺ + 0⁺⁺ and 2⁺⁺(f₂'(1525)) + 0⁺⁺ + 2⁺⁺ are discussed. This is helpful to make clear the structure of the wide resonance θ (1720),determine their masses,widths, spins and other important properties of the two resonance states, G(1590) and f₂(1720).