Azimuthal Anisotropies as Stringent Test for Nuclear Transport Models

Abstract

Azimuthal distributions of charged particles and intermediate mass fragments emitted in Au+Au collisions at 600AMeV have been measured using the FOPI facility at GSI-Darmstadt. Data show a strong increase of the in-plane azimuthal anisotropy ratio with the charge of the detected fragment. Intermediate mass fragments are found to exhibit a strong momentum-space alignment with respect of the reaction plane. The experimental results are presented as a function of the polar center-of-mass angle and over a broad range of impact parameters. They are compared to the predictions of the Isospin Quantum Molecular Dynamics model using three different parametrisations of the equation of state. We show that such highly accurate data provide stringent test for microscopic transport models and can potentially constrain separately the stiffness of the nuclear equation of state and the momentum dependence of the nuclear interaction.

26 pages Revtex, 7 ps-figures, to appear in Nucl.Phys.A

References in corpus (1)

• Transverse momentum analysis of collective motion in relativistic nuclear collisions

Cited by in corpus (9)

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• Differential directed flow in Au+Au collisions
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• Microscopic study of energy and centrality dependence of transverse collective flow in heavy-ion collisions
• Flow angle from intermediate mass fragment measurements
• Asymmetric Colliding Nuclear Matter Approach in Heavy Ion Collisions