||Warsaw Univ. of Technology (Poland)
||Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)
||SPIE-the International Society for Optical Engineering
Quarkonia studies are important for understanding the properties of quark-gluon plasma produced in heavy-ion collisions. The production mechanism of quarkonia is not well understood. Studies of quarkonia production vs. event activity may provide information about overall particle production mechanism and about the interplay of hard and soft processes in a collision. In this paper, the overview of recent results of quarkonia vs. event activity from RHIC and LHC is presented. The preliminary results of Υ production in ρ+ρ at √s = 500GeV from the STAR experiment are also presented. These results may give an answer, whether the behavior of Υ vs. event activity is similar at LHC and RHIC.