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Directed flow at mid-rapidity in event-by-event hydrodynamics

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arxiv 1103.4605 v2 pith:5WYY2POD submitted 2011-03-23 nucl-th hep-ph

Directed flow at mid-rapidity in event-by-event hydrodynamics

Fernando G. Gardim , Frederique Grassi , Yogiro Hama , Matthew Luzum , Jean-Yves Ollitrault This is my paper
classification nucl-th hep-ph
keywords directedflowinitialplaneresultsagreementangleau-au
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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.

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Cited by 1 Pith paper

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  1. Sensitivity of Heavy-Quark Dipolar Flow to its Initial Spatial Distributions in Cu+Au Collisions

    nucl-th 2026-05 unverdicted novelty 4.0

    In Cu+Au collisions, heavy-quark directed flow is an order of magnitude larger than charged-hadron flow and shows strong sensitivity to initial spatial distributions and temperature-dependent drag.