Abstract
We present STAR results on elliptic flow v2 of strange and multi-strange particles from GeV Au + Au and Cu + Cu collisions at RHIC. For each centrality of Au + Au and Cu + Cu collisions, we observe the transverse kinetic energy (mT − m) scaling at low pT and number-of-quark (nq) scaling at intermediate pT. Larger v2/εpart values are observed in more central collisions and in the systems with the larger colliding size, indicating that collective flow is stronger in more central collisions and in the systems with the larger colliding size.
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