Chinese Physics C > 2002, Vol. 26 > Issue(6): 557-562

Fragmentation Character of Resonance Events in BEPC e⁺e^－Annihilation

Department of Physics,Shandong University,Ji′nan 250100,China

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In this paper an important character was found that the final hadron multiplicities of direct J/ψ decays satisfy the same universal mass dependence as that in e ⁺e ^－→q ₀q ₀continuum events. This indicates that the fragmentation of quark and gluon to hadron follows the same mechanism. We give a reasonable interpretation to final baryon multiplicity that is enhanced by 2.5 times in direct Y decays compared to the continuum through our calculating results. But we cannot find this similar phenomenon in direct J/ψ decays.

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LIU Xi-Ming, ZHANG Xue-Yao, WANG Hai-Long and WANG Yu-Shui. Fragmentation Character of Resonance Events in BEPC e ⁺e ^－Annihilation[J]. Chinese Physics C, 2002, 26(6): 557-562.

LIU Xi-Ming, ZHANG Xue-Yao, WANG Hai-Long and WANG Yu-Shui. Fragmentation Character of Resonance Events in BEPC e ⁺e ^－Annihilation[J]. Chinese Physics C, 2002, 26(6): 557-562. shu

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Received: 2001-07-25
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Fragmentation Character of Resonance Events in BEPC e⁺e^－Annihilation

Corresponding author:LIU Xi-Ming,

Department of Physics,Shandong University,Ji′nan 250100,China

Received Date:2001-07-25

Accepted Date:1900-01-01

Available Online:2002-06-05

Abstract:In this paper an important character was found that the final hadron multiplicities of direct J/ψ decays satisfy the same universal mass dependence as that in e⁺e^－→q₀q₀continuum events. This indicates that the fragmentation of quark and gluon to hadron follows the same mechanism. We give a reasonable interpretation to final baryon multiplicity that is enhanced by 2.5 times in direct Y decays compared to the continuum through our calculating results. But we cannot find this similar phenomenon in direct J/ψ decays.

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Fragmentation Character of Resonance Events in BEPC e⁺e^－Annihilation

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