Strange hadron effective temperatures in relativistic nuclear collisions

The effective temperatures of ±, q, Ω− and Ω̄+ produced in Au+Au collisions at RHIC-BES energies are presented. Energy dependence of the kaon effective temperature is approximately constant at lower RHIC-BES energies, similar with previous SPS results and could indicate the onset of deconfinement in this energy range. The centrality dependence of ) ± showed that the charged kaon effective temperature increases at higher BES energies and also from peripheral to central collisions. The q and Ω effective temperatures increase with energy and no plateau-like behaviour is evidenced by the data.