Fragmentation Character of Resonance Events in BEPC e+e Annihilation

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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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Fragmentation Character of Resonance Events in BEPC e+e Annihilation

    Corresponding author: LIU Xi-Ming,
  • Department of Physics,Shandong University,Ji′nan 250100,China

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→q0q0 continuum 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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