QCD coherence studies using two particle azimuthal correlations

B W Kennedy,H O Ogren,B Boden,P Pfister,J Banks,G M Dallavalle,A Buijs,F X Gentit,I Cohen,C P Howarth,C J Virtue,W R Gibson,R D Heuer,S W Gensler,A Michelini,S Orito,D C Imrie,H Mes,T J Mcmahon,H M Bosch,H J Burckardt,A Gaidot,B Lorazo,M A Whalley,R Humbert,M Jimack,M Rosvick,M Tecchio,J C Clayton,C K Hargrove,R G Kellogg,M J Goodrick,H Przysiezniak,P M Watklins,K Runge,P Weber,P Kyberd,D Hochman,V Gibson,C M Hawkes,P Taras,A D Schaile,R W Springer,F Lamarche,T W Pritchard,G A Bahan,J C Hill,R F Mcgowan,U Maur,G T Zorn,P Scharff-Hansen,T P Kokott,P M Hattersley,C P Ward,B Panzer-Steindel,R J Hemingway,T Kobayashi,R J Homer,P W Jeffreys,A K Honma,P Routenburg,A M Smith,M Settles,J Steuerer,P A Elcombe,G N Patrick,W G Scott,J D Gillies,F S Merritt,P Mättig,M Yurko,C Markus,T Tsukamoto,T Behnke,F C Grant,C Wahl,T Mouthuy,B Nellen,N Paz-Jaoshvili,K W Bell,D Karlen,D R Rust,G Tysarczyk-Niemeyer,A Jawahery,G Duckeck,R K Carnegie,J Mildenberger,S Levergrün,J M Lorah,N K Watson,J Hagemann,M J Losty,P Berlich,P Leblanc,I P Duerdoth,G D Lafferty,J E Conboy,C J Oram,R Mir,G J Vandalen,K J Anderson,J E Duboscq,D E Plane,S Bougerolle,R Yaari,P Lennert,C Burgard,J Goldberg,S Weisz,G P Siroli,C Moisan,P S Wells,O Schaile,P Bock,A Rollnik,A A Carter,T Hilse,P G Estabrooks,A Astbury,A Yeaman,N J Thackray,J P Pansart,A Pouladdej,R E Hughes-Jones,F K Loebinger,J E Pilcher,J Ludwig,E Heflin,B Poli,U Binder,M Hauschild,W Mohr,M Coupland,R P Middleton,G Yekutieli,A Beck,W Gorn,O Ganel,A M Rossi,D G Fong,G Giacomelli,H Ihssen,M S Dixit,T Kawamoto,N Tesch,J M Roney,J Gascon,M J Oreglia,R Kowalewski,N I Geddes,M Morii,S Rossberg,M Hansroul,I J Bloodworth,K Stephens,L Köpke,D A Hinshaw,F G Oakham,W Schappert,D L Rees,R Shypit,M Foucher,C Y Chang,J G Layter,A Dieckmann,A C Janissen,J R Mcnutt,P Paschievici,J Schwiening,D R Ward,J W Gary,A T Watson,M Jobes,P Poffenberger,B C Shen,J R Carter,M W Redmond,M H Lehto,P D Acton,M Kuwano,R J Barlow,D Axen,R M Brown,G Maringer,N J Tresilian,D Menszner,D Pitman,M Sproston,G Vasseur,F Odorici,S Schreiber,P Igo‐Kemenes ,J Becker,C Jui,H M Fischer,G Hanson ,G E Richards,C H Shepherd-Themistocleous,M Mannelli,P Le Dû ,G Alexander,Ö Runólfsson ,G A Snow,R Van Kooten ,M Nozaki,P F Harrison,G Quast,S L Lloyd,G Bella,R Keeler ,A Montanari,A Martín ,H Evans ,T R Wyatt,S Marcellini,E Etzion,S J De Jong ,S A Wotton ,H Von Der Schmitt ,G Beaudoin,T Mori,P Schenk,D Robinson,David Charlton ,M Weber,J P Martín ,S Dado,W D Zeuner ,D J Miller,A M Lee,E Duchovni,C Schwick,S Bethke,P Jovanović ,F Fabbri,J Allison,J A Mckenna ,P R Hobson,J C Hart ,P Teixeira-Dias,G W Wilson,E Ros,S Barnett,Ch Geich-Gimbel ,J R Batley,T Włodek ,A Simon,T Mäshimo ,G Azuelos,J Von Krogh ,J P Walker,Roger Jones ,P Singh,D J.p Dumas ,E Prebys,R J Sobie ,M Dittmar,M Cooper,P E.l Clarke ,T Shears ,S Komamiya,D Van Den Plas ,T Takeshita,C Leroy,D Strom,A Wagner,J Kroll,E Do Couto E Silva ,G Mikenberg,S Tarem,H Jérémie ,C Sbarra,Hui Deng ,A H Ball,D Lellouch,P P Allport,J Král ,X Lou ,N Wermes,M Fincke-Keeler,M Turner ,T J Smith,F Meijers,G Tranströmer ,H H Nguyen,L A Del Pozo ,M Cuffiani,J T Baines ,D L Wagner,K Kawagoe,A Skuja,W J Collins,S Kluth,R Ströhmer,S J Hillier,O Biebel,J Hobbs ,V H Winterer ,P Sherwood,S Arcelli,C Grandi,J Letts,P Capiluppi,M Sasaki,H Breuker,J A Wilson,S W O’neale ,L J Levinson

doi:10.1007/bf01560339

QCD coherence studies using two particle azimuthal correlations

B W Kennedy, H O Ogren + Show 306 more

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https://doi.org/10.1007/bf01560339

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#Azimuthal Correlations #Azimuthal Correlations Of Particles + Show 8 more

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Abstract

From a sample of 146900 hadronicZ 0 decays recorded by the OPAL detector at LEP, we have studied the azimuthal correlations of particles in hadronic events. It is expected that these correlations are sensitive to interference effects in QCD. We have compared the data to QCD Monte Carlo models which include and which do not include interference effects. We find that the distributions of azimuthal correlations are not reproduced by the parton shower models we have tested unless interference effects are included, no matter which hadronisation scheme is used.

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