Collective Expansion in High Energy Heavy Ion Collisions

Journal Article · Sat Mar 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.2080· OSTI ID:475709

Bearden, I G; Hansen, A G; Hansen, O ^[1]; Boissevain, J; Fields, D E; van Hecke, H; Jacak, B V; Kopytine, M; Simon-Gillo, J; Sondheim, W; Sullivan, J P; Xu, N ^[2]; Dodd, J; Leltchouk, M; Medvedev, A; Potekhin, M; Willis, W J ^[3]; Erazmus, B; Paic, G; Pluta, J ^[4] ; Esumi, S; Kaneta, M; Maeda, N; Nishimura, S; Ohnishi, H; Sakaguchi, A; Sugitate, T; Sumi, Y ^[5]; Fabjan, C W; Franz, A; Piuz, F; Poulard, G; Spegel, M ^[6]; Ferenc, D; Ljubicic, T ^[7]; Hardtke, D; Humanic, T J; Jayanti, R; Kalechofsky, H; Lee, Y Y; Pandey, S U; Reichhold, D; Zachary, D S ^[8]; Holzer, E B; Hummel, P; Malina, R ^[9]; Loerstad, B; Murray, M; Wolf, K ^[10]; Polychronakos, V ^[11]

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1. Niels Bohr Institute, DK-2100 Copenhagen (Denmark)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Department of Physics, Columbia University, New York, New York 10027 (United States)
4. Nuclear Physics Laboratory of Nantes, 44072 Nantes (France)
5. Hiroshima University, Higashi-Hiroshima 739 (Japan)
6. CERN, CH-1211 Geneva 23 (Switzerland)
7. Rudjer Boskovic Institute, Zagreb (Croatia)
8. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)
9. Technical University, A-1040 Vienna (Austria)
10. Texas AM University, College Station, Texas 77843 (United States)
11. Brookhaven National Laboratory, Upton, New York 11973 (United States)

Transverse mass spectra of pions, kaons, and protons from the symmetric heavy-ion collisions 200AGeV S+S and 158AGeV Pb+Pb, measured in the NA44 focusing spectrometer at CERN, are presented. The mass dependence of the slope parameters provides evidence of collective transverse flow from expansion of the system in heavy-ion induced central collisions. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 475709
• Journal Information: Physical Review Letters, Vol. 78, Issue 11; Other Information: PBD: Mar 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
SULFUR 32 TARGET
SULFUR 32 REACTIONS
LEAD 207 TARGET
LEAD 208 REACTIONS
PIONS
MASS SPECTRA
KAONS
PROTONS
HEAVY ION REACTIONS
COLLECTIVE MODEL
TRANSVERSE MOMENTUM
PARTICLE PRODUCTION
HYDRODYNAMIC MODEL
EXPANSION
THERMAL EQUILIBRIUM