Particle dependence of elliptic flow in Au+Au collisions at

2003/05/31 by Paul Sorensen · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1088/0954-3899/30/1/024

published as J.Phys. G30 (2004) S217-S222 · 6 pages, 3 figures, Strange Quark Matter 2003 Conference (SQM 2003): updated with 2 figures from original talk that did not appear in the journal

openalex publication_date 2003/12/11 · arxiv created 2006/10/13 · arxiv updated 2009/12/01 · openalex created_date 2017/04/07 · openalex updated_date 2026/07/28

Abstract

The elliptic flow parameter (v₂) for K_S⁰ and Λ+Λ has been measured at mid-rapidity in Au + Au collisions at √s__NN=200 GeV by the STAR collaboration. The v₂ values for both K_S⁰ and Λ+Λ saturate at moderate p_T, deviating from the hydrodynamic behavior observed in the lower p_T region. The saturated v₂ values and the p_T scales where the deviation begins are particle dependent. The particle-type dependence of v₂ shows features expected from the hadronization of a partonic ellipsoid by coalescence of co-moving quarks. These results will be discussed in relation to the nuclear modification factor (R_CP) which has also been measured for K_S⁰ and Λ+Λ by the STAR collaboration.

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