The elliptic flow of multi-strange hadrons in = 200 GeV Au + Au collisions at STAR

Azimuthal anisotropy, especially for the multi-strange hadrons, is expected to be sensitive to the dynamical evolution in the early stage of high energy nuclear collisions. In this paper we present the latest results of multi-strange hadron elliptic flow in Au + Au collisions at = 200 GeV from the STAR experiment at RHIC. The number-of-quark scaling is evidenced with and with high statistics data, which shows strange quark collectivity at RHIC. The of meson is found to be consistent with that of proton within statistical error bars at GeV/c.