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Medium and High Energy Physics Seminar: Niseem Abdelrahman (University of Chicago) "Beam-energy and collision-system dependence of the azimuthal anisotropic flow"

Event Type
Seminar/Symposium
Sponsor
Physics
Location
464 Loomis
Date
Sep 9, 2019   1:00 pm  
Speaker
Niseem Abdelrahman (University of Chicago)
Contact
Brandy Shier
E-Mail
bshier@illinois.edu
Views
6

The Beam-energy and collision-system dependence of the anisotropic flow measurements can pro-vide important constraints for initial state models and for precision extraction of the chemical potential (µB) and temperature (T ) dependence of the QCD matter, specific shear viscosity η/s. I will present a new symmetric cumulant measurements, as well as two-, three- and four-particle cor-relations measurements (and their ratios) for charged and identified hadrons. These measurements will be presented for a broad range of transverse momenta and centrality intervals in U+U collisions at √sNN= 193 GeV and Au+Au, Cu+Au, Cu+Cu, d+Au and p+Au collisions at √sNN=200 GeV. The measurements indicate the expected trends for hydrodynamic-like viscous attenuation in the medium produced in the different systems, the influence of initial-state fluctuations, system shape (ε), system-size and asymmetry, and the transport coefficients (η/s, ζ/s, ... ) on the flow coefficients (vn). The measurements are also compared to viscous hydrodynamic calculations to pin down the roles of initial-state fluctuations, mixed harmonic correlations and system size and shape (ε). The implication of these measurements for understanding the medium properties of these systems will be discussed.

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