Importance of Granular Structure in the Initial Conditions for the Elliptic Flow

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.

4 pages, 5 figures

References in corpus (3)

• On the necessity to include event-by-event fluctuations in experimental evaluation of elliptical flow
• Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• NeXSPheRIO Results on Elliptic-Flow Fluctuations at RHIC

Cited by in corpus (5)

• Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions
• Rapid hydrodynamic expansion in relativistic heavy-ion collisions
• $<m_T>$ excitation function: Freeze-out and equation of state dependence
• Imaging of granular sources in high energy heavy ion collisions
• Detection of source inhomogeneity through event-by-event two-pion Bose-Einstein correlations