Elliptic flow from a hybrid CGC, full 3D hydro and hadronic cascade model

2007/01/31 by T Hirano, Tetsufumi Hirano, Ulrich W. Heinz +7 · 1 citation
Physics and Astronomy · #Cascade #Collision #Dust and Plasma Wave Phenomena #Elliptic flow #Entropy (arrow of time) #Flow (mathematics) #Glauber #Hadron #High-Energy Particle Collisions Research #Impact parameter #Large Hadron Collider #Particle physics theoretical and experimental studies #Perfect fluid #nucl-th

paper · pdf · doi:10.1088/0954-3899/34/8/s117

published as J.Phys.G34:S879-882,2007 · 4 pages, 4 figures, Quark Matter 2006 proceedings; title changed

arxiv created 2007/03/27 · openalex publication_date 2007/07/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We investigate the robustness of the discovery of the perfect fluid through comparison of hydrodynamic calculations with the elliptic flow coefficient v₂ at midrapidity in Au+Au collisions at sqrts_NN=200 GeV. Employing the Glauber model for initial entropy density distributions, the centrality dependence of v₂ is reasonably reproduced by using an ideal fluid description of the early QGP stage followed by a hadronic cascade in the late hadronic stage. On the other hand, initial conditions based on the Colour Glass Condensate model are found to generate larger elliptic flow due to larger initial eccentricity epsilon. We further predict v₂/epsilon at a fixed impact parameter as a function of collision energy sqrts_NN up to the LHC energy.

Citations

• Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions

Cited by

• Hydrodynamic description of heavy ion collisions