Abstract
We present measurements of the near side of triggered di-hadron correlations using neutral strange baryons and mesons at intermediate transverse momentum to look for possible flavor and baryon-meson dependence. This study is performed in , Cu+Cu, and Au+Au collisions at GeV measured by the STAR experiment at RHIC. The near-side di-hadron correlation contains two structures, a peak which is narrow in azimuth and pseudorapidity consistent with correlations from jet fragmentation, and a correlation in azimuth which is broad in pseudorapidity. The particle composition of the jet-like correlation is determined using identified associated particles. The dependence of the conditional yield of the jet-like correlation on the trigger particle momentum, associated particle momentum, and centrality for correlations with unidentified trigger particles are presented. The neutral strange particle composition in jet-like correlations with unidentified charged particle triggers is not well described by PYTHIA. However, the yield of unidentified particles in jet-like correlations with neutral strange particle triggers is described reasonably well by the same model.
- Received 17 March 2016
DOI:https://doi.org/10.1103/PhysRevC.94.014910
©2016 American Physical Society