Sensitive Observables for Color Connections in Three-Jet Events at Z0 Pole

  • By substituting the color separate singlet connections for the color neutral flow connections into JETSET7.4, we select the three-jet events according to DURHAM algorithm in e+e annihilation at Z0 pole. We find that the ratio of the special three-jet events defined by constraining the angles between different jets is sensitive to different kinds of color connections. For these special events, different connections lead to significant differences for the charged particle multiplicity of events and properties of the gluon jet. The differences become larger as ycut getting smaller. By taking appropriate ycut, as 0.0005 in this paper, the differences between these two kinds of color connections should be discriminated by experiments.
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  • [1] . Friberg C,Gustafson G,Hakkinen J.Nucl.Phys.,1997,B490:2892. WANG Qun,Gustafson G,XIE Qu-Bing.Phys.Rev.,2000,D62:0540043. Andersson B et al.Phys.Rep.,1983,97:314. Webber B R.Nucl.Phys.,1984,B238:492;Marchesini G,Webber B R.Nucl.Phys.,1984,B238:15. WANG Qun et al.Phys.Rev.,2001,D64:0120066. WANG Qun,XIE Qu-Bing,SI Zong-Guo.Phys.Lett.,1996,B388:346;WANG Qun,XIE Qu-Bing. Phys.Rev.,1995,D52:14697. Eden P,Gustafson G.Euro.Phys.Jour.,1999,C8:4358. Gustafson G,Pettersson U,Zerwas P M.Phys.Lett.,1988,B209:909. Sjostrand T,Khoze V A.Z.Phys.,1994,C62:281;Phys.Rev.Lett.,1994,72:2810. Physics at LEP2.Eds.Altarelli G,Jostrand T,Zwirner F.Yellow Report CERN 96–01, 1:124,190,24911. Gustafson G,Hakkinen J.Z .Phys.,1994,C64:65912. Lonnbland L.Z.Phys.,1996,C70:10713. SHAO Feng-Lan,XIE Qu-Bing.High Energy Phys.and Nucl.Phys.,2001,25(8):710—719;2002,26(8):779—785(in Chinese)(邵凤兰,谢去病.高能物理与核物理,2001,25(8):710—719;2002,26(8):779—785) 14. Sjostrand T.Comp.Phys.Commun.,1994,82:7415. Corcella G et al.JHEP ,2001,0101:01016. LI Shi-Yuan,SHAO Feng-Lan,XIE Qu-Bing et al.Phys.Rev.,2002,D65:077503;SHAO Feng-Lan,LI Shi-Yuan,XIE Qu-Bing.High Energy Phys.and Nucl.Phys.,2002,26(11):1103—1109(in Chinese)(邵凤兰,谢去病,李世渊.高能物理与核物理,2002,26(11):1103—1109)17. Catani S et al.Phys.Lett.,1991,B269:43218. Acton P D et al.Z .Phys.,1992,C Particles and Fields 55:1—2419. Armin Bohrer.Phys.Rep.,1997,291:107—21720. The OPAL Collaboration.Eur.Phys.J.,2002,C23:597—613
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SHAO Feng-Lan, XIE Qu-Bing and LI Shi-Yuan. Sensitive Observables for Color Connections in Three-Jet Events at Z0 Pole[J]. Chinese Physics C, 2003, 27(6): 479-483.
SHAO Feng-Lan, XIE Qu-Bing and LI Shi-Yuan. Sensitive Observables for Color Connections in Three-Jet Events at Z0 Pole[J]. Chinese Physics C, 2003, 27(6): 479-483. shu
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Received: 2002-11-25
Revised: 1900-01-01
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Sensitive Observables for Color Connections in Three-Jet Events at Z0 Pole

    Corresponding author: SHAO Feng-Lan,
  • School of Physics and Microelectronics, Shandong University, Ji′nan 250100, China

Abstract: By substituting the color separate singlet connections for the color neutral flow connections into JETSET7.4, we select the three-jet events according to DURHAM algorithm in e+e annihilation at Z0 pole. We find that the ratio of the special three-jet events defined by constraining the angles between different jets is sensitive to different kinds of color connections. For these special events, different connections lead to significant differences for the charged particle multiplicity of events and properties of the gluon jet. The differences become larger as ycut getting smaller. By taking appropriate ycut, as 0.0005 in this paper, the differences between these two kinds of color connections should be discriminated by experiments.

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