Decay of the J/ψ to Σ<SUP>0</SUP>Σ<SUP>0</SUP> Final State

BES Callaboration

Chinese Physics C> 2002, Vol. 26> Issue(2) : 93-99

Decay of the J/ψ to Σ⁰Σ⁰ Final State

BES Callaboration ^,

Institute of High Energy Physics, CAS, Beijing 100039, China

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Abstract：
With 7.8 million produced J/ψ events collected by the BES detector at the BEPC, the decay J/ψ→Σ⁰Σ⁰ is analysed. The branching ratio is measured to be BR(J/ψ→Σ⁰Σ⁰)=(0.97±0.04±0.24)×10^－3. The angular distribution is of the form dN dcosθ=N₀(1+α cos²θ) with α value of －0.21±0.27±0.13.

References

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BES Callaboration. Decay of the J/ψ to Σ⁰Σ⁰ Final State[J]. Chinese Physics C, 2002, 26(2): 93-99.

BES Callaboration. Decay of the J/ψ to Σ⁰Σ⁰ Final State[J]. Chinese Physics C, 2002, 26(2): 93-99. shu

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Received: 2001-09-19
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

Decay of the J/ψ to Σ⁰Σ⁰ Final State

BES Callaboration ^,

Corresponding author: BES Callaboration,

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2001-09-19
Accepted Date: 1900-01-01
Available Online: 2002-02-05

Abstract: With 7.8 million produced J/ψ events collected by the BES detector at the BEPC, the decay J/ψ→Σ⁰Σ⁰ is analysed. The branching ratio is measured to be BR(J/ψ→Σ⁰Σ⁰)=(0.97±0.04±0.24)×10^－3. The angular distribution is of the form dN dcosθ=N₀(1+α cos²θ) with α value of －0.21±0.27±0.13.