Directed and elliptic flow
Mar, 1999
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Abstract:
We compare microscopic transport model calculations to recent data on the directed and elliptic flow of various hadrons in 2 - 10 A GeV Au+Au and Pb (158 A GeV) Pb collisions. For the Au+Au excitation function a transition from the squeeze-out to an in-plane enhanced emission is consistently described with mean field potentials corresponding to one incompressibility. For the Pb (158 A GeV) Pb system the elliptic flow prefers in-plane emission both for protons and pions, the directed flow of protons is opposite to that of the pions, which exhibit anti-flow. Strong directed transverse flow is present for protons and Lambdas in Au (6 A GeV) Au collisions as well. Both for the SPS and the AGS energies the agreement between data and calculations is remarkable.Note:
- Latex, 4 pages, 3 eps-figures
- scattering: heavy ion
- gold
- lead
- p: hadroproduction
- pi: hadroproduction
- Lambda: hadroproduction
- hadron: particle flow
- energy dependence
- rapidity spectrum
- particle flow: transverse
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