Angular Distribution of the Process e+e-→J/ψ→γ+X(JPc),X→BB,and the Spin-Parity Analysis of the Resonance X

Zhang Lin; Yu Hong; Shen Qixing

Chinese Physics C> 1996, Vol. 20> Issue(S2) : 135-140

Angular Distribution of the Process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB,and the Spin-Parity Analysis of the Resonance X

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

Abstract
HTML
Reference
Related

PDF

Abstract：
The process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB (baryon and anti-baryon) is analyzed by using the helicity angular distribution method. The angular and the projection angular distribution formulas for different spin-parity of the resonance X are obtained. With these formulas, we can determine the spin of the resonance X through the analysis of the experimental data.
- spin parity ,
- resonance ,
- angular distribution ,
- helicity amplitude

[1]	Muhammad Farhan Taseer , Subhash Singha . Impact of particle production mechanisms on pseudorapidity distribution and directed flow in Au+Au and Cu+Cu collisions at ${ \sqrt{{\boldsymbol s}_{\boldsymbol{ NN}}}}$ = 19.6 GeV using AMPT model. Chinese Physics C, 2025, 49(10): 104101. doi: 10.1088/1674-1137/ade660
[2]	Tao Wan , Shu-Lin Tang , Yi-Bin Qian . Investigation of cluster states around ²⁰Ne including spin-orbit coupling and its extension to heavier nuclei. Chinese Physics C, 2025, 49(12): 124103. doi: 10.1088/1674-1137/adf317
[3]	Ulaş Özdem . Unveiling the electromagnetic structure and intrinsic dynamics of spin-3/2 hidden-charm pentaquarks: A comprehensive QCD analysis. Chinese Physics C, 2025, 49(10): 103106. doi: 10.1088/1674-1137/ade95a
[4]	O. A. Rubtsova , V. N. Pomerantsev , L. D. Blokhintsev . Universal momentum distributions for the spin-singlet NN channels. Chinese Physics C, 2025, 49(10): 104104. doi: 10.1088/1674-1137/addaaf
[5]	Ruifeng Zheng , Puxian Wei , Qiaoli Yang . Generation of axions and axion-like particles through mass parametric resonance induced by scalar perturbations in the early universe. Chinese Physics C, 2025, 49(12): 125108. doi: 10.1088/1674-1137/adfa82
[6]	Yangfan Guo , Zhou Yan , Xiaofei Yang , Shaojie Chen , Wencong Mei , Hanrui Hu , Yinshen Liu , Dongyang Chen , Chen Zhang , Tianxu Gao , Yipin Jing , Yanlin Ye . Development of cesium laser resonance ionization schemes for PLASEN experiment. Chinese Physics C, 2025, 49(12): 124002. doi: 10.1088/1674-1137/adf49e
[7]	LIANG Jun , LIU Yan-Chun , ZHU Qiao . Thermodynamics of noncommutative geometry inspired black holes based on Maxwell-Boltzmann smeared mass distribution. Chinese Physics C, 2014, 38(2): 025101. doi: 10.1088/1674-1137/38/2/025101
[8]	M. Bashkanov (for the WASA-at-COSY collaboration) . ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin. Chinese Physics C, 2010, 34(9): 1339-1341. doi: 10.1088/1674-1137/34/9/037
[9]	YE Wei . Possible Dependence of Dissipation Strength on Angular Momentum. Chinese Physics C, 2006, 30(8): 759-760.
[10]	Yu Hong , Shen Qixing , Zhang Lin . Angular Distribution of Process e⁺e^－→τ⁺τ^－,τ^－→a₁υτ,a₁→ρπ and Characteristics of a₁ Meson. Chinese Physics C, 1994, 18(7): 583-590.
[11]	BES Collaboration . Experimental Study of Resonance f₂(1270) in the J/ψ Hadronic Decay. Chinese Physics C, 1993, 17(2): 97-106.
[12]	WU Zhong-Li . ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C, 1989, 13(8): 752-754.

Access

Get Citation

Zhang Lin, Yu Hong and Shen Qixing. Angular Distribution of the Process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB,and the Spin-Parity Analysis of the Resonance X[J]. Chinese Physics C, 1996, 20(S2): 135-140.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1995-03-10

Fund

Supported by the National Natural Science Foundation of China.

Article Metric

Article Views(1371)
PDF Downloads(3)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Angular Distribution of the Process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB,and the Spin-Parity Analysis of the Resonance X

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

Received Date: 1995-03-10

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB (baryon and anti-baryon) is analyzed by using the helicity angular distribution method. The angular and the projection angular distribution formulas for different spin-parity of the resonance X are obtained. With these formulas, we can determine the spin of the resonance X through the analysis of the experimental data.