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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2002, Vol. 26> Issue(8) : 779-785 

Ratio of Baryon to Meson and Baryon Antibaryon Correlation in e+e－ Annihilation under Two Kinds of Color Connections

  •  School of Physics and Microelectronics,Shandong University,Ji'nan 250100,China

  • The ratio of final baryon to meson and baryon antibaryon correlation in e+e－ annihilation are considered as sensitive observables to test the hadronizition models,because among the results obtainted in different popular hadronizition models,only those from JETSET event generator can fit experimental data by adjusting extra ad hoc parameters. We replace the color neutral flow connection,which is the results in large Nc limit and is used in JETSET,with the color separate connection,which is allowed by PQCD,and calculate these observables. We compare the obtained results with those from the standard JETSET7.4 code and the available experimental data. We find that the results and the relevant properties are consistent with data. This shows that the consistency of the data with the results from the standard JETSET7.4 code for these properties does not mean that the traditional color neutral flow is the only color connection selected by NPQCD. The 100% color separate connection is also possible.
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  • References

    [1] . Andersson B et al. Phys. Rep.,1983,97:31 2. Webber B R. Nucl. Phys.,1984,B238:492;Marchesini G, Webber B R. Nucl. Phys.,1984,B238:1 3. Friberg C, Gustafson G, Hakkinen J. Nucl. Phys.,1997,B490:289 4. 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)5. WANG Qun, Gustafson G, XIE Qu-Bing. Phys. Rev.,2000,D62:0540046. WANG Qun et al. Phys. Rev.,2001,D64:012006 7. Physics at LEP1, Eds. Altarelli G et al. Yellow Report CERN 96–01,1:198 8. SI Zong-Guo, XIE Qu-Bing, WANG Qun. High Energy Phys. and Nucl. Phys.,1998,22:307(in Chinese)(司宗国,谢去病,王群.高能物理与核物理,1998,22:307) 9. Abreu P et al. Eur. Phys. J.,2000,C18:203;Abbiendi G et al. Phys. Lett.,1999,B453:15310. Andersson B, Gustafson G, Soderberg B. Nucl. Phys.,1986,B264:2911. SHAO Feng-Lan, XIE Qu-Bing. High Energy Phys. and Nucl. Phys.,2001,25(8):710—719(in Chinese)(邵凤兰,谢去病.高能物理与核物理,2001,25(8):710—719)12. WANG Qun, SI Zong-Guo, XIE Qu-Bing. Int. J. Mod. Phys.,1996,A11:5203 13. Angelis A D. J. Phys.,1993,G19:1233 14. SI Zong-Guo, XIE Qu-Bing, WANG Qun. Commun. Theor. Phys.,1997,28:85 15. SI Zong-Guo, XIE Qu-Bing. High Energy Phys. and Nucl. Phys.,1999,23:445(in Chinese)(司宗国,谢去病.高能物理与核物理,1999,23:445)16. Particle Data Group. Eur. Phys. J.,2000,C15 17. DELPHI Collab, Abreu P et al. Phys. Lett.,1998,B416:247

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SHAO Feng-Lan and XIE Qu-Bing. Ratio of Baryon to Meson and Baryon Antibaryon Correlation in e+e－ Annihilation under Two Kinds of Color Connections[J]. Chinese Physics C, 2002, 26(8): 779-785.
SHAO Feng-Lan and XIE Qu-Bing. Ratio of Baryon to Meson and Baryon Antibaryon Correlation in e+e－ Annihilation under Two Kinds of Color Connections[J]. Chinese Physics C, 2002, 26(8): 779-785. shu
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Received: 2001-11-12
Revised: 1900-01-01
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Ratio of Baryon to Meson and Baryon Antibaryon Correlation in e+e－ Annihilation under Two Kinds of Color Connections

    Corresponding author: SHAO Feng-Lan,
  • School of Physics and Microelectronics,Shandong University,Ji'nan 250100,China
  • Received Date: 2001-11-12
  • Accepted Date: 1900-01-01
  • Available Online: 2002-08-05

Abstract: The ratio of final baryon to meson and baryon antibaryon correlation in e+e－ annihilation are considered as sensitive observables to test the hadronizition models,because among the results obtainted in different popular hadronizition models,only those from JETSET event generator can fit experimental data by adjusting extra ad hoc parameters. We replace the color neutral flow connection,which is the results in large Nc limit and is used in JETSET,with the color separate connection,which is allowed by PQCD,and calculate these observables. We compare the obtained results with those from the standard JETSET7.4 code and the available experimental data. We find that the results and the relevant properties are consistent with data. This shows that the consistency of the data with the results from the standard JETSET7.4 code for these properties does not mean that the traditional color neutral flow is the only color connection selected by NPQCD. The 100% color separate connection is also possible.

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