Transition from in-plane to out-of-plane azimuthal enhancement in Au+Au collisions

Abstract

The incident energy at which the azimuthal distributions in semi-central heavy ion collisions change from in-plane to out-of-plane enhancement, E_tran, is studied as a function of mass of emitted particles, their transverse momentum and centrality for Au+Au collisions. The analysis is performed in a reference frame rotated with the sidewards flow angle, Theta_flow, relative to the beam axis. A systematic decrease of E_tran as function of mass of the reaction products, their transverse momentum and collision centrality is evidenced. The predictions of a microscopic transport model (IQMD) are compared with the experimental results.

32 pages, Latex, 22 eps figures, accepted for publication in Nucl. Phys. A

References in corpus (2)

• Transverse momentum analysis of collective motion in relativistic nuclear collisions
• Elliptic flow in heavy ion collisions near the balance energy

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