Directed flow at mid-rapidity in event-by-event hydrodynamics
Nuclear Theory
2011-06-24 v2 High Energy Physics - Phenomenology
Abstract
Fluctuations in the initial geometry of a nucleus-nucleus collision have been recently shown to result in a new type of directed flow (v_1) that, unlike the usual directed flow, is also present at midrapidity. We compute this new v_1 versus transverse momentum and centrality for Au-Au collisions at RHIC using the hydrodynamic code NeXSPheRIO. We find that the event plane of v_1 is correlated with the angle of the initial dipole of the distribution, as predicted, though with a large dispersion. It is uncorrelated with the reaction plane. Our results are in excellent agreement with results inferred from STAR correlation data.
Keywords
Cite
@article{arxiv.1103.4605,
title = {Directed flow at mid-rapidity in event-by-event hydrodynamics},
author = {Fernando G. Gardim and Frederique Grassi and Yogiro Hama and Matthew Luzum and Jean-Yves Ollitrault},
journal= {arXiv preprint arXiv:1103.4605},
year = {2011}
}
Comments
7 pages, 6 figures; Figure data files included with source; Version accepted for publication (minor changes)