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

Ding Yibing; Qin Danhua; Zhao Guangda; Zhou Lei

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2024年10月30日

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.

[1]	C. Patrignani et al (Particle Data Group) . Review of Particle Physics. Chinese Physics C, 2016, 40(10): 100001. doi: 10.1088/1674-1137/40/10/100001
[2]	Hui Jia , Bin Qi , Shou-Yu Wang , Shuo Wang , Chen Liu . Electromagnetic transitions in multiple chiral doublet bands. Chinese Physics C, 2016, 40(12): 124103. doi: 10.1088/1674-1137/40/12/124103
[3]	Xiang Liu , Jing-Fan Chang , Zheng Wang , Lei Fan . Prototype of readout electronics for the LHAASO KM2A electromagnetic particle detectors. Chinese Physics C, 2016, 40(7): 076101. doi: 10.1088/1674-1137/40/7/076101
[4]	J. N. Pandya , N. R. Soni , N. Devlani , A. K. Rai . Decay rates and electromagnetic transitions of heavy quarkonia. Chinese Physics C, 2015, 39(12): 123101. doi: 10.1088/1674-1137/39/12/123101
[5]	XU Meng-Xin , HE Yuan , WANG Feng-Feng , ZHANG Sheng-Hu , HUANG Shi-Chun , HUANG Yu-Lu , ZHAO Hong-Wei , XIA Jia-Wen . Electromagnetic characteristics of the CH cavity. Chinese Physics C, 2015, 39(2): 027005. doi: 10.1088/1674-1137/39/2/027005
[6]	MU Chun , WANG Xiao , CHEN Xiao-Lin , LIU Xiang , ZHU Shi-Lin . Dipion decays of heavy baryons. Chinese Physics C, 2014, 38(11): 113101. doi: 10.1088/1674-1137/38/11/113101
[7]	K.A. Olive et al. (Particle Data Group) . REVIEW OF PARTICLE PHYSICS. Chinese Physics C, 2014, 38(9): 1-090001. doi: 10.1088/1674-1137/38/9/090001
[8]	WANG Pei-Long , ZHANG Yun-Long , WANG Xiao-Lian , XU Zi-Zong . Magnetic shielding for DAMPE electromagnetic calorimeter PMTs. Chinese Physics C, 2014, 38(8): 086002. doi: 10.1088/1674-1137/38/8/086002
[9]	ZHAO Jing , LIU Jia , SHENG Xiang-Dong , HE Hui-Hai , GUO Yi-Qing , HOU Chao , LÜ Hong-Kui . Design and performances of electromagnetic particle detector for LHAASO-KM2A. Chinese Physics C, 2014, 38(3): 036002. doi: 10.1088/1674-1137/38/3/036002
[10]	M. Ablikim et al (BESⅡ collaboration) . Measurement of J/ψ decays into ΛΛ π⁺π^-. Chinese Physics C, 2012, 36(11): 1031-1039. doi: 10.1088/1674-1137/36/11/001
[11]	Kaushal Thakkar , Ajay Majethiya . Electromagnetic transition properties of Δ→Nγ in a hypercentral scheme. Chinese Physics C, 2012, 36(5): 385-389. doi: 10.1088/1674-1137/36/5/001
[12]	M. Bischofberger (for the Belle collaboration) . Rare decays of the tau lepton at Belle. Chinese Physics C, 2010, 34(6): 902-906. doi: 10.1088/1674-1137/34/6/048
[13]	SUN Liang (for the BABAR collaboration) . Search for new physics in the B→K^(*)l⁺l^－ decays at BABAR. Chinese Physics C, 2010, 34(9): 1504-1507. doi: 10.1088/1674-1137/34/9/085
[14]	G. D. Lafferty . Rare tau decays from BABAR. Chinese Physics C, 2010, 34(6): 907-911. doi: 10.1088/1674-1137/34/6/049
[15]	S. Pastore , R. Schiavilla , M. Viviani . Electromagnetic processes in a χEFT framework. Chinese Physics C, 2010, 34(9): 1368-1371. doi: 10.1088/1674-1137/34/9/044
[16]	S. Eidelman¹ , 2 . τ lepton decays. Chinese Physics C, 2010, 34(6): 896-901. doi: 10.1088/1674-1137/34/6/047
[17]	Henryk Czyz , Agnieszka Grzelinska . Strong and electromagnetic J/ψ and ψ(2S) decays into pion and kaon pairs. Chinese Physics C, 2010, 34(6): 855-859. doi: 10.1088/1674-1137/34/6/039
[18]	Tian Lili , Xie Qubing . Strong γ Decays Via Three Gluons. Chinese Physics C, 1993, 17(S3): 239-247.
[19]	DING Yi-Bing , QIN Dan-Hua , ZHAO Guang-Da , ZHOU Lei . On the ηc Particle and Its Electromagnetic Decays. Chinese Physics C, 1991, 15(7): 584-590.
[20]	Xing Zheng , Chen Zingqu . Rotational Effect on Electromagnetic Transitions in Nuclei. Chinese Physics C, 1989, 13(S2): 213-219.

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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.