Directed and Elliptic Flow

1999/03/25 by S. Soff, Sven Soff, Steffen A. Bass +8
Mathematics · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Quantum Chromodynamics and Particle Interactions #Stochastic processes and statistical mechanics #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.48550/arxiv.nucl-th/9903061

Latex, 4 pages, 3 eps-figures

arxiv created 1999/03/25 · openalex publication_date 1999/03/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

Related

• Directed Flow in 158 A GeV Pb + Pb Collisions
• Elliptic flow of inclusive charged hadrons in Au+Au collisions at E_lab = 35~A~GeV using the PHSD model
• Dependence of elliptic flow on transverse momentum in √\mathrm\it s_NN=200 GeV Au-Au and √\mathrm\it s_NN=2.76 TeV Pb-Pb collisions
• Elliptic flow of charged hadrons in d+Au collisions at √s_NN = 200 GeV using a multi-phase transport model
• Collision energy dependence of elliptic flow of identified hadrons in heavy-ion collisions using the PHSD model