Energy and charged particle flow in 10.8A GeV/c Au+Au collisions
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Gesellschaft fuer Schwerionenforschung, Darmstadt (Germany)
- Idaho National Engineering Laboratory, Idaho Falls, Idaho 83402 (United States)
- McGill University, Montreal (Canada)
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
- SUNY, Stony Brook, New York 11794 (United States)
- University of Sao Paulo (Brazil)
- Wayne State University, Detroit, Michigan 48202 (United States)
Experimental results and a detailed analysis are presented of the transverse energy and charged particle azimuthal distributions measured by the E877 Collaboration for different centralities of Au+Au collisions at a beam momentum of 10.8A GeV/c. The anisotropy of these distributions is studied with respect to the reaction plane reconstructed on an event-by-event basis using the transverse energy distribution measured by calorimeters. Results are corrected for the reaction plane resolution. For semicentral events we observe directed flow signals of up to 10{percent}. We observe a stronger anisotropy for slow charged particles. For both the charged particle and transverse energy distributions we observe a small but nonzero elliptic anisotropy with the major axis pointing into the reaction plane. Combining the information on transverse energy and charged particle flow we obtain information on the flow of nucleons and pions. The data are compared to event generators and the need to introduce a mean field or nucleon-nucleon potential is discussed. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 513489
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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