arXiv:0805.0018·v1·High Energy Physics — Phenomenology
Importance of Granular Structure in the Initial Conditions for the Elliptic Flow
R.P.G. Andrade (1)🇧🇷 · F. Grassi (1)🇧🇷 · Y. Hama (1)🇧🇷 · T. Kodama (2)🇧🇷 · W.L. Qian (1) ((1) Sao Paulo U., Brazil, (2) Rio de Janeiro F.U., Brazil)🇧🇷
Abstract
We show effects of granular structure of the initial conditions (IC) of hydrodynamic description of high-energy nucleus-nucleus collisions on some observables, especially on the elliptic-flow parameter v2. Such a structure enhances production of isotropically distributed high-pT particles, making v2 smaller there. Also, it reduces v2 in the forward and backward regions where the global matter density is smaller, so where such effects become more efficacious.
Comments: 4 pages, 5 figures