Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon

Details Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon

2006-08-17

arxiv.org/abs/hep-ph/0608189v2

Phys.Rev.C74:064908,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, minor changes and modified title as published in PRC

Scientific paper

10.1103/PhysRevC.74.064908

Recent data from the NA49 experiment on directed and elliptic flow for Pb+Pb reactions at CERN-SPS are compared to calculations with a hadron-string transport model, the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. The rapidity and transverse momentum dependence of the directed and elliptic flow, i.e. $v_1$ and $v_2$, are investigated. The flow results are compared to data at three different centrality bins. Generally, a reasonable agreement between the data and the calculations is found. Furthermore, the energy excitation functions of $v_1$ and $v_2$ from $E_{\rm beam}=90A$ MeV to $E_{\rm cm}=200A$ GeV are explored within the UrQMD framework and discussed in the context of the available data. It is found that, in the energy regime below $E_{\rm beam}\leq 10A$ GeV, the inclusion of nuclear potentials is necessary to describe the data. Above $40A$ GeV beam energy, the UrQMD model starts to underestimate the elliptic flow. Around the same energy the slope of the rapidity spectra of the proton directed flow develops negative values. This effect is known as the third flow component ("antiflow") and cannot be reproduced by the transport model. These differences can possibly be explained by assuming a phase transition from hadron gas to quark gluon plasma at about $40A$ GeV.

Affiliated with

Also associated with

No associations

Rating

Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directed and elliptic flow in heavy ion collisions from $E_{\rm beam}=90$ MeV/nucleon to $E_{\rm c.m.}=200$ GeV/nucleon will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-388748