Directed Flow of Baryons in Heavy-Ion Collisions
Abstract
The collective motion of nucleons from high-energy heavy-ion collisions is analyzed within a relativistic two-fluid model for different equations of state (EoS). As function of beam energy the theoretical slope parameter F_y of the differential directed flow is in good agreement with experimental data, when calculated for the QCD-consistent EoS described by the statistical mixed-phase model. Within this model, which takes the deconfinement phase transition into account, the excitation function of the directed flow <P_x> turns out to be a smooth function in the whole range from SIS till SPS energies. This function is close to that for pure hadronic EoS and exhibits no minimum predicted earlier for a two-phase bag-model EoS. Attention is also called to a possible formation of nucleon antiflow (F_y < 0) at energies of the order of 100 A GeV.
Keywords
Cite
@article{arxiv.nucl-th/0011004,
title = {Directed Flow of Baryons in Heavy-Ion Collisions},
author = {Yu. B. Ivanov and E. G. Nikonov and W. Noerenberg and A. A. Shanenko and V. D. Toneev},
journal= {arXiv preprint arXiv:nucl-th/0011004},
year = {2014}
}
Comments
7 pages, 5 figures