Flow Phenomena at Ags Energies

Baryon flow from SIS to AGS energies

We analyze the baryon sideward and elliptic flow from SIS (0.25 ∼ 2 AGeV) to AGS (2 ∼11.0AGeV) energies for Au + Au collisions in the relativistic transport model RBUU that includes all baryon resonances up to a mass of 2 GeV as well as string degrees of freedom for the higher mass continuum. There are two factors which dominantly determine the baryon flow at these energies: the momentum depend...

Radial, sideward and elliptic flow at AGS energies

Hydrodynamic Approaches to Relativistic Heavy Ion Collisions

First data reported by the STAR Collaboration at RHIC [1] has a significant meaning that the observed large magnitude of elliptic flow for charged hadrons is consistent with hydrodynamic predictions [2]. This suggests that large pressure possibly in the partonic phase is built at the early stage (τ ∼ 0.6 fm/c) in Au+Au collisions at sNN = 130 and 200 GeV. This situation at RHIC is in contrast t...

Differential Flow of Protons in Au + Au Collisions at AGS Energies

We study the proton sideward and elliptic differential flow for Au+Au collisions at AGS energies (2 – 8 A·GeV) in a microscopic relativistic transport model that includes all baryon resonances up to a mass of 2 GeV as well as string degrees of freedom for the higher hadronic excitations. In order to explore the sensitivity of the various differential flows to the nuclear equation of state (EoS)...

Can the energy dependence of elliptic flow reveal the QGP phase transition?

Ideal hydrodynamic simulations are performed to compute the evolution with collision energy of hadron spectra and elliptic flow between AGS and LHC energies. We argue that viscous effects should decrease with increasing energy, improving the applicability of ideal fluid dynamics at higher energies. We show that the increasing radial flow at higher energies pushes the elliptic flow to larger tra...