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Preprint
Report number nucl-ex/9807004
Title Directed Flow in 158 A GeV $^{208}Pb$ + $^{208}Pb$ Collisions
Author(s)

Aggarwal, M.M. ; Agnihotri, A. ; Ahammed, Z. ; Angelis, A.L.S. ; Antonenko, V. ; Arefev, V. ; Astakhov, V. ; Avdeitchikov, V. ; Awes, T.C. ; Baba, P.V.K.S. ; Badyal, S.K. ; Baldine, A. ; Barabach, L. ; Barlag, C. ; Bathe, S. ; Batiounia, B. ; Bernier, T. ; Bhalla, K.B. ; Bhatia, V.S. ; Blume, C. ; Bock, R. ; Bohne, E.M. ; Borocz, Z. ; Bucher, D. ; Buijs, A. ; Busching, H. ; Carlen, L. ; Chalyshev, V. ; Chattopadhyay, S. ; Cherbatchev, R. ; Chujo, T. ; Claussen, A. ; Das, A.C. ; Decowski, M.P. ; Dzhordzhadze, V. ; Donni, P. ; Doubovik, I. ; Dutta Majumdar, M.R. ; El Chenawi, K. ; Eliseev, S. ; Enosawa, K. ; Foka, P. ; Fokin, S. ; Frolov, V. ; Ganti, M.S. ; Garpman, S. ; Gavrishchuk, O. ; Geurts, F.J.M. ; Ghosh, T.K. ; Glasow, R. ; Gupta, S.K. ; Guskov, B. ; Gustafsson, H.A. ; Gutbrod, H.H. ; Higuchi, R. ; Hrivnacova, I. ; Ippolitov, M. ; Kalechofsky, H. ; Kamermans, R. ; Kampert, K.H. ; Karadzhev, K. ; Karpio, K. ; Kato, S. ; Kees, S. ; Kim, H. ; Kolb, B.W. ; Kosarev, I. ; Koutcheryaev, I. ; Krumpel, T. ; Kugler, A. ; Kulinich, P. ; Kurata, M. ; Kurita, K. ; Kuzmin, N. ; Langbein, I. ; Lebedev, A. ; Lee, Y.Y. ; Lohner, H. ; Luquin, L. ; Mahapatra, D.P. ; Manko, V. ; Martin, M. ; Maximov, A. ; Mehdiyev, Rashid R. ; Mgebrichvili, G. ; Miake, Y. ; Mikhalev, D. ; Mishra, G.C. ; Miyamoto, Y. ; Morrison, Douglas R.O. ; Mukhopadhyay, D.S. ; Myalkovsky, V. ; Naef, H. ; Nandi, B.K. ; Nayak, S.K. ; Nayak, T.K. ; Neumaier, S. ; Nianine, A. ; Nikitin, V. ; Nikolaev, S. ; Nilsson, P. ; Nishimura, S. ; Nomokonov, P. ; Nystrand, J. ; Obenshain, F.E. ; Oskarsson, A. ; Otterlund, I. ; Pachr, M. ; Parfenov, A. ; Pavliouk, S. ; Peitzmann, T. ; Petracek, V. ; Plasil, F. ; Pinanaud, W. ; Purschke, M.L. ; Raven, B. ; Rak, J. ; Raniwala, R. ; Raniwala, S. ; Ramamurthy, V.S. ; Rao, N.K. ; Retiere, F. ; Reygers, K. ; Roland, G. ; Rosselet, L. ; Roufanov, I. ; Roy, C. ; Rubio, J.M. ; Sako, H. ; Sambyal, S.S. ; Santo, R. ; Sato, S. ; Schlagheck, H. ; Schmidt, H.R. ; Shabratova, G. ; Sibiriak, I. ; Siemiarczuk, T. ; Silvermyr, D. ; Sinha, B.C. ; Slavin, N. ; Soderstrom, K. ; Solomey, N. ; Sorensen, S.P. ; Stankus, P. ; Stefanek, G. ; Steinberg, P. ; Stenlund, E. ; Stuken, D. ; Sumbera, M. ; Svensson, T. ; Trivedi, M.D. ; Tsvetkov, A. ; Twenhofel, C. ; Tykarski, L. ; Urbahn, J. ; Van Eijndhoven, N. ; van Nieuwenhuizen, G.J. ; Vinogradov, A. ; Viyogi, Y.P. ; Vodopianov, A.S. ; Voros, S. ; Wyslouch, B. ; Yagi, K. ; Yokota, Y. ; Young, G.R.

Publication 1998
Imprint 22 Jul 1998
Number of pages 5
Note 5 pages, Latex, including 3 eps figures, submitted to Phys.Rev.Lett Comments: Resubmitted with revised text and figures
Published in: Phys. Rev. Lett.
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; WA98
Abstract The directed flow of protons and positive pions have been studied in 158 A GeV Pb + Pb collisions. A directed flow analysis of the rapidity dependence of the average transverse momentum projected onto the reaction plane is presented for semi-central collisions with impact parameters of approximately 8 fm, where the flow effect is largest. The magnitude of the directed flow is found to be significantly smaller than observed at AGS energies and than RQMD model predictions.
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