Directed and Elliptic Flow in 158 GeV/Nucleon Pb+Pb Collisions

Journal Article · Fri May 01 04:00:00 EDT 1998 · Physical Review Letters

OSTI ID:627924

Panagiotou, A D; Petridis, A; Vassiliou, M ^[1]; Cooper, G E; Huang, I; Irmscher, D; Jacobs, P; Margetis, S; Odyniec, G; Porter, R J; Poskanzer, A M; Ritter, H G; Rudolph, H; Toy, M; Voloshin, S; Wang, F; Wienold, T ^[2]; Barnby, L S; Barton, R A; Blyth, C O ; Caines, H L; Hill, L A; Jones, P G; Nelson, J M; Squier, G T; Yates, T A; Zybert, R ^[3]; Csato, P; Fodor, Z; Gal, J; Hegyi, S; Levai, P; Molnar, J; Palla, G; Sikler, F; Szentpetery, I; Sziklai, J; Vesztergombi, G; Zimanyi, J ^[4]; Baechler, J; Buncic, N; Buncic, P; Ferguson, M I; Fischer, H G; Puehlhofer, F; Stock, R; Vranic, D; Wenig, S ^[5]; Bartke, J; Gladysz, E; Kowalski, M; Rybicki, A ^[6]; Appelshaeuser, H; Bock, R; Brockmann, R; Irmscher, D; Markert, C; Roland, C; Sandoval, A; Sann, H ^[7]; Brady, F P; Cebra, D; Dunn, J; Huang, I; Wood, L ^[8]; Kolesnikov, V I; Malakhov, A I; Melkumov, G L; Semenov, A Y ^[9]; Bormann, C; Buncic, N; Buncic, P; Flierl, D; Foka, P; Fuchs, M; Gabler, F; Gazdzicki, M; Guenther, J; Huemmler, H; Poziombka, S; Renfordt, R; Roehrich, D; Roland, G; Rudolph, H; Schmischke, D; Stock, R; Stroebele, H ^[10]; Igo, G; Lasiuk, B; Toy, M; Trentalange, S; Whitten, C ^[11]; Eckhardt, F; Friese, V; Henkel, T; Piper, A; others, and

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1. Department of Physics, University of Athens, Athens (Greece)
2. Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
3. Birmingham University, Birmingham (United Kingdom)
4. KFKI Research Institute for Particle and Nuclear Physics, Budapest (Hungary)
5. CERN, Geneva (Switzerland)
6. Institute of Nuclear Physics, Cracow (Poland)
7. Gesellschaft fuer Schwerionenforschung (GSI), Darmstadt (Germany)
8. University of California at Davis, Davis, California 95616 (United States)
9. Joint Institute for Nuclear Research, Dubna (Russia)
10. Fachbereich Physik der Universitaet, Frankfurt (Germany)
11. University of California at Los Angeles, Los Angeles, California 90095 (United States)

The directed and elliptic flow of protons and charged pions has been observed from the semicentral collisions of a 158GeV/nucleon Pb beam with a Pb target. The rapidity and transverse momentum dependence of the flow has been measured. The directed flow of the pions is opposite to that of the protons but both exhibit negative flow at low p{sub t} . The elliptic flow of both is fairly independent of rapidity but rises with p{sub t} . {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 627924
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FLOW MODELS
HEAVY ION REACTIONS
LEAD
PARTICLE RAPIDITY
PIONS MINUS
PIONS PLUS
PROTONS
TEV RANGE 10-100
TRANSVERSE MOMENTUM