Elliptic flow of Λ, Ξ and Ω in 2.76 A TeV Pb+Pb collisions

14th International Conference on Strangeness in Quark Matter

Song, Huichao^1 ; Meng, Fanli^1 ; Xin, Xianyin^1 ; Liu, Yu-Xin^1

Department of Physics, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China^1

关键词: CASCADE model;    Elliptic flows;    Hybrid model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012089/pdf
DOI  :  10.1088/1742-6596/509/1/012089

来源: IOP

【 摘 要 】

The elliptic flow v2for strange and multi-strange bayons in 2.76 A TeV Pb+Pb collisions is investigated with VISHNU hybrid model that connects 2+1-d viscous hydrodynamics with a hadron cascade model. It is found that VISHNU nicely describes v2(pT) data for Λ, Ξ and Ω at various centralities. Comparing with the ALICE data, it roughly reproduces the mass-ordering of v2among π, K, p, Ξ and Ω within current statistics, but gives an inverse v2mass-ordering between p and Λ.