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Jun 24 – 28, 2019
US/Eastern timezone
5th International Conference on the Initial Stages in High-Energy Nuclear Collisions

Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Jun 25, 2019, 4:02 PM
8th floor Theory Center (Pupin)

8th floor Theory Center


Poster Initial conditions for hydrodynamics & transport coefficients Posters


Dr Niseem Abdelrahman (Department of Physics, University of Illinois at Chicago, Chicago)


The elliptic and triangular flow coefficients, $v_{2}$ and $v_{3}$, are expected to be driven by the initial anisotropy coefficients of the same order, $\epsilon_{2}$ and $\epsilon_{3}$, respectively. However, the higher order flow coefficients, $v_{n}$ (n $>$ 3), are comprised of linear contributions driven by $\epsilon_{n}$, as well as mode-coupled contributions derived from the lower order coefficients. The study of these disparate contributions to $v_{n}$ can give important insight to discern initial-state models and to constrain the temperature-dependent specific shear viscosity, $\frac{\eta}{s}(T)$. In recent work, we have made detailed measurements of both the linear and the mode-coupled coefficients, $v_{n}$ (n=4,5), in Au+Au collisions ($\sqrt{s_{NN}}$ =200 GeV) using 2- and multi-particle correlations based on the standard and subevent cumulant methods. These measurements will be presented as a function of centrality, $p_{T}$ and particle species. The comparisons to the LHC measurements and different theoretical calculations will be presented. The implications of these comparisons for initial-state models and $\frac{\eta}{s}(T)$ will be discussed.

Primary author

Dr Niseem Abdelrahman (Department of Physics, University of Illinois at Chicago, Chicago)

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