On the η'<sub>c</sub> Particle and its Electromagnetic Decays

Ding Yibing; Qin Danhua; Zhao Guangda; Zhou Lei

Chinese Physics C> 1991, Vol. 15> Issue(S3) : 265-272

On the η'_c Particle and its Electromagnetic Decays

Ding Yibing ^1,3,4 ,
Qin Danhua ^2,3 ,
Zhao Guangda ^2,3,4 ,
Zhou Lei ¹

1 Department of Physics, Graduate School, the Chinese Academy of Sciences, Beijing, China;
2 Department of Physics, Beijing University, Beijing, China;
3 Institutc of Theoretical Physics, Chinese Academy of Sciences, Beijing, China;
4 CCAST(Worid Laboratory)

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Abstract：
In the framework of the potential model, the mass, width and branching ratios of η'_c are estimated. It is shown that it is possible for the width of the forbidden Ml transition η'_c → γJ/ψ to raise one order of magnitude after considering relativistic corrections in comparison with the non-relativistic result. The possibilities to measure the cascade electromagnetic radiation processes ψ'/(3686) → γη'_c→ γγ¹P₁,γγJ/ψ,3γ at the Beijing Electron-Positron Collider (BEPC) are discussed.

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Ding Yibing, Qin Danhua, Zhao Guangda and Zhou Lei. On the η'_c Particle and its Electromagnetic Decays[J]. Chinese Physics C, 1991, 15(S3): 265-272.

Ding Yibing, Qin Danhua, Zhao Guangda and Zhou Lei. On the η'_c Particle and its Electromagnetic Decays[J]. Chinese Physics C, 1991, 15(S3): 265-272. shu

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Received: 1990-11-15

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Supported by the National Natural Science Foundation of China and the State Education Commission of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

On the η'_c Particle and its Electromagnetic Decays

1 Department of Physics, Graduate School, the Chinese Academy of Sciences, Beijing, China;
2 Department of Physics, Beijing University, Beijing, China;
3 Institutc of Theoretical Physics, Chinese Academy of Sciences, Beijing, China;
4 CCAST(Worid Laboratory)

Received Date: 1990-11-15

Fund Project: Supported by the National Natural Science Foundation of China and the State Education Commission of China.

Abstract: In the framework of the potential model, the mass, width and branching ratios of η'_c are estimated. It is shown that it is possible for the width of the forbidden Ml transition η'_c → γJ/ψ to raise one order of magnitude after considering relativistic corrections in comparison with the non-relativistic result. The possibilities to measure the cascade electromagnetic radiation processes ψ'/(3686) → γη'_c→ γγ¹P₁,γγJ/ψ,3γ at the Beijing Electron-Positron Collider (BEPC) are discussed.