Triangular flow in event-by-event ideal hydrodynamics in Au+Au collisions at √s_{\rm NN}=200A GeV

2010/08/31 by Hannah Petersen, Guang-You Qin, Steffen A. Bass +1 · 1 citation
Physics and Astronomy · #nucl-th #hep-ph #nucl-ex

paper · pdf · doi:10.1103/physrevc.82.041901

published as Phys.Rev.C82:041901,2010 · 5 pages, 7 figures, two figures and discussion added, centrality dependence of e2 and e3 added, version accepted by PRC

arxiv created 2010/10/18 · arxiv updated 2010/11/11

Abstract

The first calculation of triangular flow v₃ in Au+Au collisions at √s_{\rm NN}=200A GeV from an event-by-event (3+1)-d transport+hydrodynamics hybrid approach is presented. As a response to the initial triangularity ε₃ of the collision zone, v₃ is computed in a similar way to the standard event-plane analysis for elliptic flow v₂. It is found that the triangular flow exhibits weak centrality dependence and is roughly equal to elliptic flow in most central collisions. We also explore the transverse momentum and rapidity dependence of v₂ and v₃ for charged particles as well as identified particles. We conclude that an event-by-event treatment of the ideal hydrodynamic evolution starting with realistic initial conditions generates the main features expected for triangular flow.

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• Impact of Initial-State Nuclear and Sub-Nucleon Structures on Ultra-Central Puzzle in Heavy Ion Collisions

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