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

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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 λbroken 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 + 2 λ). The universality of this relation is emphasized.

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[20]	Chen Fengzhi,Nie Chuanhui. The Origin of Anomalous Hard Positrons in the Cosmic Rays Above 10 GeV. Chinese Physics C, 1991, 15(S3): 259-264.

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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

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Received: 1991-02-19

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Supported by the National Natural Science Foundation of China.

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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 observedλbrokenSU_f(3) symmetry in multihadron production is consistent with stochastic quark arrangement, and this self-consistency determines the ratios amongSU_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 factorλ=<N_S>/<N_u> completely determines the ratio of (3/2)⁺to (1/2)⁺, andβ=(1 +λ)/(3 + 2λ). The universality of this relation is emphasized.