Anisotropic flow of strange particles in heavy-ion collisions at RHIC energies

Anisotropic flow of Ks, (K) over bars and Lambdas is studied in heavy-ion collisions at SPS and RHIC energies within the microscopic quark-gluon string model. At SPS energy the directed flow of kaons differs considerably at midrapidity from that of antikaons, while at RHIC energy kaon and antikaon flows coincide. The change is attributed to the formation of dense meson-dominated matter at RHIC, where the differences in interaction cross-sections of hadrons become unimportant. The directed flows of strange particles, upsilon(1)(K,(K) over bar,Lambda) (y), have universal negative slope at \y\ less than or equal to 2 at RHIC. The elliptic flow of strange hadrons is developed at midrapidity at times 3 less than or equal to t less than or equal to 10 fm/c. It increases almost linearly with rising p(t) and stops rising at p(t) greater than or equal to 1.5 GeV/c reaching the same saturation value upsilon(2)(K,Lambda)(p(t)) approximate to 10% in accord with experimental results.