High-p_T azimuthal correlations of neutral strange baryons and mesons in STAR at RHIC

Abstract

We present results on two-particle azimuthal correlations of high-$p_T$ neutral strange baryons ($\Lambda$,$\bar{\Lambda }$) and mesons ($K_S^0$) associated with non-identified charged particles in d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. In particular, we discuss properties of the near-side yield of associated charged particles as a function of centrality, transverse momentum and $z_T$, as well as possible baryon/meson and particle/antiparticle differences. The results are compared to the proton and pion triggered correlations and to fragmentation and recombination models.

arXiv comment3 pages, 2 figures, AIP proceedings of PANIC05 conference, Santa-Fe, New Mexico, USA, October 24-28, 2005