Publication : t11/039
Directed flow at mid-rapidity in event-by-event hydrodynamics
Gardim F.G. (Instituto de Física, Universidade São Paulo, CEP 05508-090 Cidade Universitaria, São Paulo - Brasil)Grassi F. (Instituto de Física, Universidade São Paulo, CEP 05508-090 Cidade Universitaria, São Paulo - Brasil)
Hama Y. (Instituto de Física, Universidade São Paulo, CEP 05508-090 Cidade Universitaria, São Paulo - Brasil)
Luzum M. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:Année de publication : 2011
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) which, 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.
Revue : Phys. Rev. C 83 064901 (2011)
DOI : 10.1103/PhysRevC.83.064901
Preprint : arXiv:1103.4605
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
