Beam Energy Dependence of Directed and Elliptic Flow Measurement from the STAR Experiment

TL;DR

This paper reports measurements of directed and elliptic flow in heavy-ion collisions at various energies, providing insights into the early dynamics of the quark-gluon plasma formation.

Contribution

It presents new differential flow measurements across different collision energies and systems, enhancing understanding of energy dependence in heavy-ion collision dynamics.

Findings

Flow varies with collision energy and system size.

Directed and elliptic flow depend on centrality, transverse momentum, and pseudorapidity.

Results contribute to understanding the early-stage evolution of the system.

Abstract

Measurements of anisotropic flow in heavy-ion collisions provide insight into the early stage of the system's evolution. This proceedings presents directed and elliptic flow for Au+Au collisions at 39, 11.5 and 7.7 GeV, and for Cu+Cu at 22.4 GeV, measured in the STAR Experiment at RHIC. Differential measurements of directed and elliptic flow of charged particles as a function of centrality, transverse momentum and pseudorapidity are discussed.