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

Experiment Study of f₀(975) in J/ψDecays

BES Collaboration

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

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Abstract：
Based on 7.8×10 ⁶J/ ψevents 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 f ₀are obtained. The angular distribution of J/ ψ→ ϕf ₀, f ₀→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 f ₀(975) in J/ ψDecays[J]. Chinese Physics C, 1995, 19(S2): 125-131.

BES Collaboration. Experiment Study of f ₀(975) in J/ ψDecays[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/ψDecays

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 7.8×10⁶J/ψevents 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 f₀are 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.