The Origin and Universality of “Spin Suppression” in Baryon Production

Xie Qubing

Chinese Physics C> 1992, Vol. 16> Issue(S1) : 65-71

The Origin and Universality of “Spin Suppression” in Baryon Production

Xie Qubing

Department of Physics, Shandong University, Jinan, Shandong, China

Abstract
HTML
Reference
Related

PDF

Abstract：
In high energy reactions the production of spin (3/2)⁺ baryons is strongly suppressed in comparison with that of (1/2)⁺ baryons. I show that the observed λ broken SU_f(3) symmetry in multihadron production is consistent with stochastic quark arrangement, and this self-consistency determines the ratios among SU_f(3) singlet, octet and decuplet, including all of their excited states. But for (1/2)⁺ and (3/2)⁺ baryon production, as in the case of the popular models, then the strangeness suppression factor λ=<N_S>/<N_u> completely determines the ratio of (3/2)⁺ to (1/2)⁺, and β=(1 + λ)/(3 + 2λ). The universality of this relation is emphasized.

[1]	. ³H and ³He nuclei production in a combined thermal and coalescence framework for heavy-ion collisions in the few-GeV energy regime. Chinese Physics C, 2026, 50(1): 014104. doi: 10.1088/1674-1137/ae099a
[2]	Víctor Miguel Banda Guzmán , Rubén Flores-Mendieta , Johann Hernández . Use of SU(3) flavor projection operators to construct baryon-meson scattering amplitudes in the 1/N_c expansion. Chinese Physics C, 2026, 50(2): 1-25.
[3]	Y. P. Wang , Y. K. Wang , P. W. Zhao . Tilted-axis-cranking covariant density functional theory for the high-spin spectroscopy in ⁶⁹Ga. Chinese Physics C, 2026, 50(2): 1-5. doi: 10.1088/1674-1137/ae07b8
[4]	Xin Zhang , Yu Zhang , Xiaofeng Luo , Nu Xu . UrQMD Simulations of Higher-order Cumulants in Au+Au Collisions at High Baryon Density. Chinese Physics C, 2026, 50(2): 1-6. doi: 10.1088/1674-1137/ae0995
[5]	Pei-Rong Li , Xiao-Rui Lyu , Yangheng Zheng . Experimental overview on the charmed baryon decays. Chinese Physics C, 2026, 50(2): 1-24.
[6]	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
[7]	Jie-Fen Shen , Yan-Ju Zhang , Lin Han . Pair production of the isosinglet vector-like leptons at the ${\boldsymbol e^{\bf +}\boldsymbol e^{\bf -}}$ colliders. Chinese Physics C, 2025, 49(11): 113108. doi: 10.1088/1674-1137/adf1ef
[8]	Shuo Yang , Yi-Hang Wang , Peng-Bo Zhao , Ji-Long Ma . Search for heavy vector-like B quark via pair production in fully hadronic channels at CLIC. Chinese Physics C, 2025, 49(11): 113101. doi: 10.1088/1674-1137/adf183
[9]	Wei-Xi Kong , Ben-Wei Zhang . Fox-Wolfram moment of jet production in relativistic heavy-ion collisions. Chinese Physics C, 2025, 49(9): 094101. doi: 10.1088/1674-1137/add5d8
[10]	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
[11]	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
[12]	Di Wang , Wei-Chen Fu . Topological amplitudes of bottom baryon decays in the SU(3)_F limit. Chinese Physics C, 2025, 49(11): 113104. doi: 10.1088/1674-1137/aded06
[13]	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
[14]	Hai-Long Zhen , Huai-Fan Li , Yu-Bo Ma . Universality of thermodynamic relation with corrections in Einstein-Bel-Robinson gravity black holes. Chinese Physics C, 2025, 49(11): 111001. doi: 10.1088/1674-1137/ade6d3
[15]	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

Access

Get Citation

Xie Qubing. The Origin and Universality of “Spin Suppression” in Baryon Production[J]. Chinese Physics C, 1992, 16(S1): 65-71.

Xie Qubing. The Origin and Universality of “Spin Suppression” in Baryon Production[J]. Chinese Physics C, 1992, 16(S1): 65-71. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1991-02-19

Fund

Supported by the National Natural Science Foundation of China.

Article Metric

Article Views(1159)
PDF Downloads(2)
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

The Origin and Universality of “Spin Suppression” in Baryon Production

Xie Qubing

Department of Physics, Shandong University, Jinan, Shandong, China

Received Date: 1991-02-19

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

Abstract: In high energy reactions the production of spin (3/2)⁺ baryons is strongly suppressed in comparison with that of (1/2)⁺ baryons. I show that the observed λ broken SU_f(3) symmetry in multihadron production is consistent with stochastic quark arrangement, and this self-consistency determines the ratios among SU_f(3) singlet, octet and decuplet, including all of their excited states. But for (1/2)⁺ and (3/2)⁺ baryon production, as in the case of the popular models, then the strangeness suppression factor λ=<N_S>/<N_u> completely determines the ratio of (3/2)⁺ to (1/2)⁺, and β=(1 + λ)/(3 + 2λ). The universality of this relation is emphasized.