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Chinese Physics C> 2001, Vol. 25> Issue(8) : 710-719 

Hadron Multiplicities and Its Momentum Spectra from Color Separate Connection among Final Partons in e+e－ Annihilation Events

  •  Physics Department,Shandong University,Jinan 250100,China

  • We calculate the hadron multiplicities and the momentum spectra of π±,K±,p/p in e+e－→q+ng→hadrons for the case where the color separate singlet connections occur among the final partons q+ng with the help of JETSET event generator. We compare the results with those obtainted from the traditional color flow models and the available experimental data. The comparisons show that the momentum spectra obtained in the case of C-weight have a singnificant deviation from the data.,whereas those obtained in the case of T-weight are consistant with the data. The results from the case of T-weight are also consistant with those from the color flow model in most cases,and for proton, are even better than the later as implemented in default JETSET compared with the data.
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    [1] . Sjostrand T .int.J.Mod .Phys.,1 988,A3:751 ;Z Physics at LEP1 ,CERN Report CERN89–0 9,3:1432. WANG Qun,XIE Qu-Bing .High Energy Phys.and Nucl.Phys.,1995,19:1100(in Chinese)(王群、谢去病.高能物理与核物理,1995,19:1100)3. Friberg C ,Gustafson G ,Hakkinen J.Nucl.Phys.,1997,B490:2894. Wang Qun ,Gustafson G ,Xie Qu-Bing .Phys.Rev .,2000,D62:054004 5. Knowles I G ,Lafferty G D .Journal of Phys.Nuclear and Particle Phys.,1997,G23:731 6. Andersson B,Gustafson G ,Soderberg B .Nucl.Phys.,1986,B264:297. Particle Data Group.Eur.Phys.J.2000 ,C15:226 8. ARGUS,Albrecht H et al.Z.Phys.,1989,C44:547 9. TPC,Aihara H et al.Phys.Rev.Lett.,1988,61:1263 10. ALEPH,D.Buskulic et al.Z.Phys.,1995,C66:355 11. DELPHI,Abreu P et al.Eur.Phys.J.,1998,C5:585 12. OPAL,Akers R et al.Z .Phys.,1994,C63:18113. SLD,Abe K et al.Phys.Rev.,1 999,D59:052001

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SHAO Feng-Lan and XIE Qu-Bing. Hadron Multiplicities and Its Momentum Spectra from Color Separate Connection among Final Partons in e+e－ Annihilation Events[J]. Chinese Physics C, 2001, 25(8): 710-719.
SHAO Feng-Lan and XIE Qu-Bing. Hadron Multiplicities and Its Momentum Spectra from Color Separate Connection among Final Partons in e+e－ Annihilation Events[J]. Chinese Physics C, 2001, 25(8): 710-719. shu
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Received: 2000-11-20
Revised: 1900-01-01
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Hadron Multiplicities and Its Momentum Spectra from Color Separate Connection among Final Partons in e+e－ Annihilation Events

    Corresponding author: SHAO Feng-Lan,
  • Physics Department,Shandong University,Jinan 250100,China
  • Received Date: 2000-11-20
  • Accepted Date: 1900-01-01
  • Available Online: 2001-08-05

Abstract: We calculate the hadron multiplicities and the momentum spectra of π±,K±,p/p in e+e－→q+ng→hadrons for the case where the color separate singlet connections occur among the final partons q+ng with the help of JETSET event generator. We compare the results with those obtainted from the traditional color flow models and the available experimental data. The comparisons show that the momentum spectra obtained in the case of C-weight have a singnificant deviation from the data.,whereas those obtained in the case of T-weight are consistant with the data. The results from the case of T-weight are also consistant with those from the color flow model in most cases,and for proton, are even better than the later as implemented in default JETSET compared with the data.

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