Azimuthal Anisotropy of [Formula presented] and [Formula presented] Production at Midrapidity from [Formula presented] Collisions at [Formula presented]

Abstract

We report STAR results on the azimuthal anisotropy parameter [Formula presented] for strange particles [Formula presented], [Formula presented], and [Formula presented] at midrapidity in [Formula presented] collisions at [Formula presented] at the Relativistic Heavy Ion Collider. The value of [Formula presented] as a function of transverse momentum, [Formula presented], of the produced particle and collision centrality is presented for both particles up to [Formula presented]. A strong [Formula presented] dependence in [Formula presented] is observed up to [Formula presented]. The [Formula presented] measurement is compared with hydrodynamic model calculations. The physics implications of the [Formula presented] integrated [Formula presented] magnitude as a function of particle mass are also discussed. © 2002 The American Physical Society.