Particle dependence of elliptic flow in Au + Au collisions at √sNN = 200 GeV

doi:10.1088/0954-3899/30/1/024

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Journal of Physics G: Nuclear and Particle Physics

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Journal of Physics G: Nuclear and Particle Physics Volume 30 Number 1 Create an alert RSS this journal

Paul Sorensen (for the STAR Collaboration) 2004 J. Phys. G: Nucl. Part. Phys. 30 S217 doi:10.1088/0954-3899/30/1/024

Particle dependence of elliptic flow in Au + Au collisions at $\sqrt{s_{_{NN}}} = 200\, {\rm GeV}$

Paul Sorensen (for the STAR Collaboration)

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Abstract References Cited By

The elliptic flow parameter (v₂) for K⁰_S and $\Lambda{+}\overline{\Lambda}$ has been measured at mid-rapidity in Au+Au collisions at $\sqrt{s_{_{NN}}}=200\, {\rm GeV}$ by the STAR Collaboration. The v₂ values for both K⁰_S and $\Lambda{+}\overline{\Lambda}$ saturate at moderate p_T, deviating from the hydrodynamic behaviour 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 K⁰_S and $\Lambda{+}\overline{\Lambda}$ by the STAR Collaboration.