Collective flow in 158AGeV Pb+Pb collisions

M M Aggarwal ,H.H Gutbrod,R Santo,R Cherbatchev,B Raeven,K Enosawa,H Schlagheck,A.L.S Angelis,V Myalkovski,A Lebedev,L Rosselet,K Yagi,D Mikhalev,H Kalechofsky,A Nianine,G Stefanek,A Baldine,B Batiounia,I Sibiriak,A Parfenov,I Kosarev,R Mehdiyev,D Stüken,I Koutcheryaev,H Naef,R Kamermans,V Astakhov,V Arefiev,V Chalyshev,I Roufanov,S Pavliouk,P.V.K.S Baba,I Langbein,E Stenlund,I Otterlund,P Kulinich,J Urbahn,S Bathe,R Higuchi,K Karadjev,A Maximov,N Solomey,G Mgebrichvili,C Twenhöfel,V Avdeitchikov,I Doubovik,M Pachr,S Kees,T Bernier,L Tykarski,D Bucher,L Barabach,K Söderström,S Neumaier,K Kurita,C Barlag,H Büsching,V Nikitine,T Peitzmann,S Vörös,R Bock,V Djordjadze,S Garpman,A Buijs,E.-M Bohne,A Claussen,W.H.V Heeringen,R Glasow,Tushar K Ghosh ,J M Rubio ,T K Nayak ,A Vodopianov ,K B Bhalla ,S K Nayak ,P Nomokonov ,A Öskarsson ,В Фролов ,D P Mahapatra ,N Kameswara Rao ,M Šumbera ,O Gavrishchuk ,B W Kolb ,M L Purschke ,S Fokin ,S Nishimura ,N Kuzmin ,S K Gupta ,Michel Martin ,Subhasis Chattopadhyay ,S Sambyal ,P Foka ,D Mukhopadhyay ,N Slavine ,V Antonenko ,H R Schmidt ,S K Badyal ,N Van Eijndhoven ,F Retière ,S Sörensen ,Y Miake ,F.e Obenshain ,V Petráček ,V Manko ,Harald Feldmann ,C Blume ,H Kim ,L Carlén ,B K Nandi ,D P Morrison ,V S Bhatia ,M S Ganti ,S.m Eliseev ,G Shabratova ,P W Stankus ,M Ippolitov ,A Vinogradov ,Shintaro Sato ,M D Trivedi ,Y Yokota ,K.h Kampert ,David C Bock ,G Roland ,F Guerts ,B.n Gus'kov ,E.-J Buis ,T Chujo ,K Karpio ,P Dönni ,H Löhner ,K Reygers ,F Plášil ,G C Mishra ,A Das ,V.s Ramamurthy ,Yusuke Miyamoto ,Y.y Lee ,G J Van Nieuwenhuizen ,J Nystrand ,H Sako ,K El Chenawi ,M R Dutta Majumdar ,А Куглер ,T C Awes ,B Wysłouch ,P Steinberg ,A Tsvetkov ,Tomas Svensson ,M.p Decowski ,H Å Gustafsson ,V Kumar ,Z Ahammed ,J Rak ,Y P Viyogi ,I Hřivnáčová ,S Kato ,S Raniwala ,T Siemiarczuk ,B C Sinha ,A Agnihotri ,Masahiro Kurata ,S Nikolaev ,M Vos ,G R Young

doi:10.1016/s0375-9474(98)00373-x

Abstract

Anisotropic transverse flow has been studied with a magnetic spectrometer at midrapidity and the Plastic Ball detector at target rapidity in the WA98 experiment. Our preliminary results show the existence of directed and elliptic flow in semi-central Pb+Pb collisions. The magnitude of the directed flow is found to be significantly smaller than those observed at the AGS energies.

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