Measurement of azimuthal asymmetries in deep inelastic scattering

J Breitweg,S Chekanov,M Derrick,D Krakauer,S Magill,B Musgrave,A Pellegrino,J Repond, R W Stanek,Rikutaro Yoshida, M C K Mattingly,G Abbiendi,F Anselmo,P Antonioli,G Bari,M Basile, L Bellagamba, D Boscherini,A Bruni, G Bruni,G Cara Romeo,G Castellini,L Cifarelli,F Cindolo,A Contin,N Coppola,M Corradi,S De Pasquale, P Giusti,G Iacobucci,G Laurenti,G Levi, A Margotti,T Massam,R Nania, F Palmonari,A Pesci, A Polini,G Sartorelli,Y Zamora Garcia, A Zichichi, C Amelung,A Bornheim, I Brock,K Coboken,J Crittenden,R Deffner,H Hartmann,K Heinloth,E Hilger,P Irrgang,H P Jakob,A Kappes,U F Katz,R Kerger,E Paul,H Schnurbusch,A Stifutkin,J Tandler,K Ch Voss,A Weber, H Wieber,D S Bailey,O Barret,N H Brook,B Foster,Greg P Heath,Helen F Heath,J D Mcfall,D Piccioni,E Rodrigues, Jeff Scott,R J Tapper,M Capua, A Mastroberardino,M Schioppa,G Susinno,H Y Jeoung,J Y Kim,Jong Ho Lee,I T Lim,K J Ma,M Y Pac, A Caldwell,Wei Liu,Xue Liu,B Mellado,S Paganis,S Sampson,W B Schmidke,F Sciulli,J Chwastowski,A Eskreys,J Figiel,K Klimek,K Olkiewicz,Krzysztof Piotrzkowski,M Przybycien,P Stopa,L Zawiejski,B Bednarek,K Jelen, D Kisielewska,A M Kowal, T Z Kowalski,E Rulikowskazarȩbska,L Suszycki,D Szuba,A Kotanski, L A T Bauerdick, U Behrens,J K Bienlein,C Burgard,D Dannheim,K Desler,G Drews,A Foxmurphy,U Fricke,F Goebel,P Gottlicher,R Graciani,T Haas,W Hain,G F Hartner,D Hasell,K Hebbel, K F Johnson,M Kasemann,Wolfgang Koch,U Kotz,H Kowalski,L Lindemann,B Lohr, M Martinez,M Milite,T Monteiro,M Moritz,D Notz,F Pelucchi,M C Petrucci,M Rohde,P R B Saull, A Savin,U Schneekloth,F Selonke,M Sievers, S Stonjek,E Tassi,Gregory T Wolf,U Wollmer,C Youngman, W Zeuner,C Coldewey,A Lopezduran Viani,A Meyer,S Schlenstedt,P B Straub, G Barbagli, E Gallo,P G Pelfer, G Maccarrone,L Votano,A Bamberger,A Benen,S Eisenhardt,P Markun,H Raach,S Wolfle, P Bussey,A T Doyle,S W Lee,N Macdonald,G J Mccance,D H Saxon,L E Sinclair,I O Skillicorn,Richard Waugh,I Bohnet,N Gendner,U Holm, A Meyerlarsen,H Salehi,K Wick,A Garfagnini,I Gialas,L K Gladilin,D Kcira,R Klanner,E Lohrmann,G Poelz,F Zetsche,Ricardo Goncalo, K R Long, D B Miller,Alexander Tapper,R L Walker,U Mallik,P Cloth,D Filges,T Ishii,M Kuze,Kunihiro Nagano,K Tokushuku,Shogo Yamada,Y Yamazaki, S H Ahn, S K Park,H Lim,I H Park, D Son,F Barreiro, Guillaume Garcia,C Glasman,O Gonzalez, L Labarga,J Del Peso,I Redondo, J Terron,M Barbi,F Corriveau,D S Hanna,A Ochs,Sanjay Padhi,M Riveline,D G Stairs,M Wing,T Tsurugai,V Bashkirov, B A Dolgoshein,R K Dementiev,P Ermolov,Yu A Golubkov, I Katkov,L A Khein,N A Korotkova,I A Korzhavina,V A Kuzmin,O Yu Lukina,A S Proskuryakov,L M Shcheglova,A Solomin,N N Vlasov,S A Zotkin,C Bokel, M Botje,N Brummer,J Engelen,S Grijpink, E Koffeman,P Kooijman,S Schagen,A Van Sighem,H Tiecke,N Tuning,J J Velthuis, J H Vossebeld,L Wiggers,E De Wolf, D Acosta,Ben Bylsma, L S Durkin,J Gilmore,C M Ginsburg,C L Kim, T Y Ling,S Boogert,A M Coopersarkar,R C E Devenish, J Groseknetter,Takashi Matsushita,O Ruske,M R Sutton, R Walczak,A Bertolin,R Brugnera,Roberto Carlin,F Dal Corso, U Dosselli,S Dusini,S Limentani,M Morandin,M Posocco,L Stanco,R Stroili,C Voci,L Adamczyk,L Iannotti,B Y Oh,J R Okrasinski,W S Toothacker,J Whitmore,Y Iga,G Dagostini,G Marini,A Nigro,C M Cormack, J C Hart, N A Mccubbin,T P Shah,D Epperson, C A Heusch,H F W Sadrozinski, A Seiden,R Wichmann,D C Williams,N Pavel, H Abramowicz,S Dagan,S Kananov,A Kreisel,A Levy,T Abe,T Fusayasu,K Umemori,Takashi Yamashita,R Hamatsu,Takuo Hirose,M Inuzuka,S Kitamura,Takuji Nishimura,M Arneodo,N Cartiglia,R Cirio,M Costa,M I Ferrero, S Maselli, Vincenzo Monaco,C Peroni, M Ruspa, R Sacchi,Ada Solano, A Staiano,M Dardo,C P Fagerstroem,R Galea,T Koop,G M Levman,James F Martin, R S Orr,S Polenz,A Sabetfakhri, Donna M Simmons,J M Butterworth,C D Catterall,M E Hayes, E A Heaphy,T W Jones,J B Lane,B J West,J Ciborowski, R Ciesielski,G Grzelak,R J Nowak,J M Pawlak,R Pawlak,B Smalska,T Tymieniecka,A K Wroblewski,J A Zakrzewski,A F żarnecki,M Adamus,T Gadaj,O Deppe,Y Eisenberg,D Hochman,U Karshon,W Badgett,D Chapin,R Cross, C Foudas,S E K Mattingly,D D Reeder, W H Smith,A Vaiciulis,T Wildschek,M Wodarczyk,A Deshpande,S Dhawan,V W Hughes,S Bhadra,J E Cole,W R Frisken,R Hallwilton, M Khakzad,S Menary

msra（2000）

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摘要

The distribution of the azimuthal angle for the charged hadrons has been studied in the hadronic centre-of-mass system for neutral current deep inelastic positron-proton scattering with the ZEUS detector at HERA. Measurements of the dependence of the moments of this distribution on the transverse momenta of the charged hadrons are presented. Asymmetries that can be unambiguously attributed to perturbative QCD processes have been observed for the first time. (C) 2000 Elsevier Science B.V. All rights reserved.

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关键词

centre of mass,neutral current,deep inelastic scattering,high energy physics

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