Elliptic flow at RHIC: where and when does it formed?

Abstract

Evolution of the elliptic flow of hadrons in heavy-ion collisions at RHIC energies is studied within the microscopic quark-gluon string model. The elliptic flow is shown to have a multi-component structure caused by (i) rescattering and (ii) absorption processes in spatially asymmetric medium. Together with different freeze-out dynamics of mesons and baryons, these processes lead to the following trend in the flow formation: the later the mesons are frozen, the weaker their elliptic flow, whereas baryon fraction develops stronger elliptic flow during the late stages of the fireball evolution. Comparison with the PHOBOS data demonstrates the model ability to reproduce the v2(eta) signal in different centrality bins.

11 pages incl. 5 figures

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Cited by in corpus (7)

• Particle production azimuthal asymmetries in a clustering of color sources model
• Elliptic flow from color strings
• Elliptic flow at RHIC and LHC in the string percolation approach
• Energy densities and equilibration in heavy ion collisions at sqrt(s) = 200 GeV with the quark-gluon string model
• Elliptic flow: pseudorapidity and number of participants dependence
• Hints of incomplete thermalization in RHIC data
• Parton rearrangement and fast thermalization in heavy-ion collisions at RHIC and LHC energies