Elliptic flow of multi-strange particles: fragmentation, recombination and hydrodynamics

Chiho Nonaka, Rainer J. Fries, Steffen A. Bass

Published 2003-08-19, updated 2004-02-18Version 2

We study the elliptic flow $v_2$ of multi-strange hadrons such as the $\phi$, $\Xi$ and $\Omega$ as a function of transverse momentum in the recombination and fragmentation model and compare to a standard hydrodynamic calculation. We find that the measurement of $v_2$ for the $\phi$ and $\Omega$ will allow for the unambiguous distinction between parton recombination and statistical hadro-chemistry to be the dominant process in hadronization at intermediate transverse momenta.