Flavor ordering of elliptic flows at high transverse momentum

Abstract

Based on the quark coalescence model for the parton-to-hadron phase transition in ultra-relativistic heavy ion collisions, we relate the elliptic flow ($v_2$) of high $\pt$ hadrons to that of high $\pt$ quarks. For high $\pt$ hadrons produced from an isospin symmetric and quark-antiquark symmetric partonic matter, magnitudes of their elliptic flows follow a flavor ordering as $(v_{2,\pi }=v_{2,N})>(v_{2,\Lambda }=v_{2,\Sigma })>v_{2,K}>v_{2,\Xi }>(v_{2,\varphi }=v_{2,\Omega })$ if strange quarks have a smaller elliptic flow than light quarks. The elliptic flows of high $\pt$ hadrons further follow a simple quark counting rule if strange quarks and light quarks have same high $\pt$ spectrum and coalescence probability.

4 pages, 1 figure, revtex

References in corpus (1)

• Elliptic flow from two- and four-particle correlations in Au + Au collisions at sqrt{s_{NN}} = 130 GeV

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