477 research outputs found
Ks, Lambda and Xi production at intermediate to high pT from Au+Au collisions at \sqrt{s_{NN}} = 39, 11.5 and 7.7 GeV
We report on the pT dependence of nuclear modification factors () for
Ks, Lambda, Xi and the Anti-Lambda/Ks ratios at mid-rapidity from Au+Au
collisions at \sqrt{s_{NN}} = 39, 11.5 and 7.7 GeV. At \sqrt{s_{NN}} = 39 GeV,
the data shows a baryon/meson separation at intermediate pT and a
suppression for Ks for pT up to 4.5 GeV/; the Anti-Lambda/Ks shows baryon
enhancement in the most central collisions. However, at \sqrt{s_{NN}} = 11.5
and 7.7 GeV, shows much less baryon/meson separation and
Anti-Lambda/Ks shows almost no baryon enhancement. These observations indicate
that the matter created in Au+Au collisions at \sqrt{s_{NN}} = 11.5 or 7.7 GeV
might be distinct from that created at \sqrt{s_{NN}} = 39 GeV.Comment: 4 pages, 2 figures, to appear in the proceedings of 7th International
Workshop on Critical Point and Onset of Deconfinement (CPOD2011), Wuhan,
China, Nov. 7-11, 201
- …