Event Generator for ψ′Decays of VP and PP Modes

YE ShuWei; ZHAO JiaWei; CHEN HongFang; ZHANG ZiPing

Chinese Physics C> 2000, Vol. 24> Issue(3) : 185-189

Event Generator for ψ′Decays of VP and PP Modes

Department of Modern Physics, University of Science & Technology of China, Hefei 230027, China

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Abstract：
A convenient generator, based on the existing framework of BES simulation, applicable generally to both ψ′ and J/ψ decays of VP and PP modes, is established. The corresponding angular distribution is taken into account. A similar generator is also established for the successive J/ψ decay in the process of ψ′→X+ J/ψ. In the measurement of branching ratios for ψ'→γη, γη′, ωπ^o, π⁺π^－, K⁺K^－, this generator is used to determine the selection efficiency and estimate the background.

References

[1]

DING HuiLiang et al.High Energy Phys. and Nucl Phys.(in Chinese), 1992, 16:769–789(丁慧良等.高能物理与核物理,1992,16:769–789)2 Coffman D et al.Phys.Rev,1988,D38:2695 3 Baltrusaitis R M et al. Phys. Rev, 1985, D32:2883 4 YE Shu Wei. PhD Disseration,University of Science and Technology(in Chinese), 1997(叶树伟.中国科技大学博士论文,1997)5 Brodsky S J. Exclusive Process in Quantum Chromodynamics, SLAC–PUB–4947, Mar. 1989 6 BAI J Z et al(BES Collab.).Phys.Rev,1998,D58:097101

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YE ShuWei, ZHAO JiaWei, CHEN HongFang and ZHANG ZiPing. Event Generator for ψ′Decays of VP and PP Modes[J]. Chinese Physics C, 2000, 24(3): 185-189.

YE ShuWei, ZHAO JiaWei, CHEN HongFang and ZHANG ZiPing. Event Generator for ψ′Decays of VP and PP Modes[J]. Chinese Physics C, 2000, 24(3): 185-189. shu

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Received: 1999-02-01
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

Event Generator for ψ′Decays of VP and PP Modes

Corresponding author: YE ShuWei,

Department of Modern Physics, University of Science & Technology of China, Hefei 230027, China

Received Date: 1999-02-01
Accepted Date: 1900-01-01
Available Online: 2000-03-05

Abstract: A convenient generator, based on the existing framework of BES simulation, applicable generally to both ψ′ and J/ψ decays of VP and PP modes, is established. The corresponding angular distribution is taken into account. A similar generator is also established for the successive J/ψ decay in the process of ψ′→X+ J/ψ. In the measurement of branching ratios for ψ'→γη, γη′, ωπ^o, π⁺π^－, K⁺K^－, this generator is used to determine the selection efficiency and estimate the background.