BARYON PRODUCTION IN e<SUP>+</SUP>e<SUP>－</SUP> ANNIHILATION

LIU Xi-Ming

Chinese Physics C> 1989, Vol. 13> Issue(9) : 803-807

BARYON PRODUCTION IN e⁺e^－ ANNIHILATION

LIU Xi-Ming ^,

Shandong University,Jinan

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Abstract：
It is poined out that the relative weight between (3/2)⁺ and (1/2)⁺ baryons has no effect on the yield of long-lived baryons in final states,but changes the yield of (3/2)⁺ baryons considerably.By analysing the experimental data we show a very strong suppression factor of (3/2)⁺ baryons of the order 0.3, and as a result the yield of the final state baryons and their ratio all agree with experiment.

References

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Xie Qu-bing and Liu Xi-ming, Chin. J. High Ener. and Nucl. Phys., 11(1987), 192.[2] Tobriorn Stosrrand, INTERNATIIONAL JOURNAL OF MODERN PHYSICS, A3(1988), 751.[3] Xie Qu-Ling and Liu Xi-ming, Phys. Rev., D38(198P), 2169.[4] ARGUS Collab. H. Albrecht et al., Z. phys., C39(1988), 177.[5] TASSO Collab. M. Althoff et al., 2. Phys, C26(1984), 181.[6] D. H. Saxo, Proc. Intern. Europhysics Conf. on High energy Physics (Bari, 1985), p. 859.[7] HRS Collab. S. Abachi et al., phys. Rev. Lett, 58(1987), 2627.[8] MARK 11 Collab. S. R. Klein et al., Phys. Rev. Lett, 59(1987), 7412.[9] ARGUS Collab. H. Albreht et al., phys. Lett., B183(1987), 413.[10] CLEO Collab. M. S. Alam et al., Phys. Rev. Lett. 53(1984). 24.[11] MARK 11 Collab. S. R. Klein et al., Phys. Rev. Lett., 58(1987), 644.[12] Particle Data Group. Review of particle properties. Phys. Lett., B170(1986), 1.[13] HRS Collab. M. Derrick et al., Phys Lett., B158(1985), 519; HRS Collab, M. Derrick et al., Phys. Rev.Lett., 53(1984), 1971.

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[8]	Zhang Lin , Yu Hong , Shen Qixing . Angular Distributions for the Process e⁺e^－→J/ψ→γ+X(J^PC),X→BB and Spin-Parity Analysis of the Resonance X. Chinese Physics C, 1996, 20(3): 280-285.
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[12]	CHEN E-Sheng . Average Yields of Long-Lived Charged Particles in High Energy e⁺e^－ Annihilation. Chinese Physics C, 1993, 17(3): 252-261.
[13]	CHEN E-Sheng , LI Ming-Ming . Yields of Charmed and Beautiful Mesons in e⁺e^－ Annihilation at s=10—178GeV 的e⁺e^-. Chinese Physics C, 1991, 15(11): 981-990.
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[18]	CHEN Zhi-Jiang , XIE Qu-Bing , MA Wen-Jun . THE NEAREST CORRELATION IN RAPIDITY AND THE MULTIPLICITY DISTRIBUTION IN e⁺e^－ ANNIHILATION. Chinese Physics C, 1988, 12(6): 742-748.
[19]	QIU Zhong-Ping , CAI Xu . CYLINDRICAL BAG MODEL OF PARTICLE PRODUCTION IN HIGH ENERGY e⁺e^－ ANNIHILATION. Chinese Physics C, 1988, 12(5): 708-711.
[20]	LIANG Zuo-Tang , XIE Qu-Bing . MULTIPLICITY DISTRIBUTION IN e⁺e^－ ANNIHILATION. Chinese Physics C, 1987, 11(6): 840-843.

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LIU Xi-Ming. BARYON PRODUCTION IN e⁺e^－ ANNIHILATION[J]. Chinese Physics C, 1989, 13(9): 803-807.

LIU Xi-Ming. BARYON PRODUCTION IN e⁺e^－ ANNIHILATION[J]. Chinese Physics C, 1989, 13(9): 803-807. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

BARYON PRODUCTION IN e⁺e^－ ANNIHILATION

LIU Xi-Ming ^,

Corresponding author: LIU Xi-Ming,

Shandong University,Jinan

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-09-05

Abstract: It is poined out that the relative weight between (3/2)⁺ and (1/2)⁺ baryons has no effect on the yield of long-lived baryons in final states,but changes the yield of (3/2)⁺ baryons considerably.By analysing the experimental data we show a very strong suppression factor of (3/2)⁺ baryons of the order 0.3, and as a result the yield of the final state baryons and their ratio all agree with experiment.