A Measurement Of The Qcd Color Factor Ratios C-A/C-F And T-F/C-F From Angular-Correlations In 4-Jet Events

R Akers,Kj Anderson,S Arcelli,S Asai,A Astbury,D Axen,G Azuelos,Ah Ball,E Barberio,Rj Barlow,R Bartoldus,Jr Batley,G Beaudoin, A Beck,Ga Beck,J Becker,C Beeston,T Behnke,Kw Bell,G Bella,P Bentkowski, S Bentvelsen,P Berlich,S Bethke,O Biebel,Ij Bloodworth,P Bock,Hm Bosch,M Boutemeur,S Braibant,P Brightthomas,Rm Brown,A Buijs,Hj Burckhart,C Burgard,P Capiluppi,Rk Carnegie,Aa Carter,Jr Carter,Cy Chang,C Charlesworth,Dg Charlton,Sl Chu,Pel Clarke,Jc Clayton,Sg Clowes,I Cohen,Je Conboy,M Coupland,M Cuffiani, S Dado,C Dallapiccola,Gm Dallavalle,C Darling,S Dejong,H Deng,M Dittmar,Ms Dixit,Ede Silva,Je Duboscq,E Duchovni,G Duckeck,Ip Duerdoth,Uc Dunwoody,Pa Elcombe,Pg Estabrooks,E Etzion,Hg Evans,F Fabbri,B Fabbro, M Fanti,M Fierro,M Finckekeeler,Hm Fischer,P Fischer,R Folman,Dg Fong,M Foucher,H Fukui,A Furtjes,P Gagnon,A Gaidot,Jw Gary,J Gascon,Ni Geddes,C Geichgimbel,Sw Gensler,Fx Gentit, T Geralis, G Giacomelli,P Giacomelli,R Giacomelli,V Gibson,Wr Gibson,Jd Gillies,J Goldberg,Dm Gingrich,Mj Goodrick,W Gorn,C Grandi,P Grannis,E Gross,J Hagemann,Gg Hanson,M Hansroul,Ck Hargrove,J Hart,Pa Hart,M Hauschild,Cm Hawkes,E Heflin,Rj Hemingway, G Herten,Rd Heuer,Jc Hill,Sj Hillier,T Hilse,Da Hinshaw,Pr Hobson,D Hochman,A Hocker, Ej Horner,Ak Honma,R Howard,Re Hughesjones,R Humbert,P Igokemenes,H Ihssen,Dc Imrie,A Jawahery,Pw Jeffreys,H Jeremie,M Jimack,M Jones,Rwl Jones,P Jovanovic,C Jui,D Karlen,K Kawagoe,T Kawamoto,Rk Keeler,Rg Kellogg,Bw Kennedy,B King,J King,S Kluth,T Kobayashi,M Kobel,Ds Koetke,Tp Kokott,S Komamiya,R Kowalewski,P Krieger, J Vonkrogh,P Kyberd,Gd Lafferty,H Lafoux,R Lahmann, J Lauber,Jg Layter,P Leblanc,P Ledu,Am Lee,E Lefebvre,Mh Lehto,D Lellouch,C Leroy, J Letts,L Levinson, Z Li,F Liu,Sl Lloyd,Fk Loebinger,Gd Long,B Lorazo,Mj Losty,Xc Lou,J Ludwig,A Luig,M Mannelli,S Marcellini,C Markus,Aj Martin,Jp Martin,T Mashimo,P Mattig,U Maur,J Mckenna,Tj Mcmahon,Ai Mcnab,Jr Mcnutt,F Meijers,Fs Merritt,H Mes, A Michelini,Rp Middleton,G Mikenberg,J Mildenberger,Dj Miller,R Mir,W Mohr,C Moisan,A Montanari, T Mori,M Morii,U Muller,B Nellen, B Nijjhar,Sw Oneale,Fg Oakham,F Odorici,Ho Ogren,Cj Oram,Mj Oreglia, S Orito,Jp Pansart,Gn Patrick,Mj Pearce,P Pfister,Pd Phillips,Je Pilcher,J Pinfold,D Pitman,De Plane,P Poffenberger, B Poli,A Posthaus,Tw Pritchard, H Przysiezniak,Mw Redmond,Dl Rees,D Rigby,M Rison,Sa Robins,D Robinson,Jm Roney,E Ros,S Rossberg,Am Rossi, M Rosvick, P Routenburg,Y Rozen,K Runge,O Runolfsson, De Rust,M Sasaki,C Sbarra,Ad Schaile,O Schaile,F Scharf,P Scharffhansen,P Schenk,B Schmitt,H Vonderschmitt,M Schroder,Hc Schultzcoulon,P Schutz,M Schulz,C Schwick,J Schwiening,Wg Scott,M Settles,Tg Shears,Bc Shen,Ch Shepherdthemistocleous,P Sherwood,Gp Siroli,A Skillman,A Skuja,Am Smith,Tj Smith, Ga Snow,R Sobie,Rw Springer,M Sproston,A Stahl,C Stegmann,K Stephens,J Steuerer,B Stockhausen,R Strohmer,D Strom,P Szymanski,H Takeda,T Takeshita,S Tarem,M Tecchio, P Teixeriadias,N Tesch,Ma Thomson,S Towers,T Tsukamoto,Mf Turnerwatson,D Vandenplas,R Vankooten,G Vasseur,M Vincter,A Wagner,Dl Wagner,Cp Ward,Dr Ward,Jj Ward,Pm Watkins,At Watson,Nk Watson,P Weber,Ps Wells,N Wermes,B Wilkens,Gw Wilson,Ja Wilson,Vh Winterer,T Wlodek,G Wolf,S Wotton,Tr Wyatt,A Yeaman,G Yekutieli,M Yurko,W Zeuner,Gt Zorn

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS（1995）

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摘要

From 1 105 045 hadronic Z(0) decays observed with the OPAL detector at the LEP e(+)e(-) collider, 21 732 four-jet events are selected. A simultaneous fit of three selected angular variables from these events by the second order QCD matrix element calculation yields C-A/C-F = 2.11 +/- 0.16(stat.) +/- 0.28(syst.) T-F/C-F = 0.40 +/- 0.11(stat.) +/- 0.14(syst.) for the ratios of colour factors, in agreement with SU(3) expectations of C-A/C-F = 9/4 and T-F/C-F = 3/8.

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