Experiment Study of f<sub>0</sub>(975) in J/<i>ψ</i> Decays

BES Collaboration

Chinese Physics C> 1995, Vol. 19> Issue(S2) : 125-131

Experiment Study of f₀(975) in J/ψ Decays

BES Collaboration

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

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Abstract：
Based on 7.8×10⁶ J/ψ events collected by the BES at BEPC, the hadronic decays J/ψ→ϕπ⁺π^- and J/ψ→ωπ⁺π^- are studied, and the branching ratios of these process and the mass and width of f₀ are obtained. The angular distribution of J/ψ→ϕf₀, f₀→7π⁺π^- is fitted and the helicity amplitude ratios of this process are given for the first time.
- scalar meson ,
- threshold effect ,
- spin-parity ,
- helicity
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BES Collaboration. Experiment Study of f₀(975) in J/ψ Decays[J]. Chinese Physics C, 1995, 19(S2): 125-131.

BES Collaboration. Experiment Study of f₀(975) in J/ψ Decays[J]. Chinese Physics C, 1995, 19(S2): 125-131. shu

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Received: 1994-10-12

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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

Experiment Study of f₀(975) in J/ψ Decays

BES Collaboration

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

Received Date: 1994-10-12

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

Abstract: Based on 7.8×10⁶ J/ψ events collected by the BES at BEPC, the hadronic decays J/ψ→ϕπ⁺π^- and J/ψ→ωπ⁺π^- are studied, and the branching ratios of these process and the mass and width of f₀ are obtained. The angular distribution of J/ψ→ϕf₀, f₀→7π⁺π^- is fitted and the helicity amplitude ratios of this process are given for the first time.