Speaker
Dr
Radoslaw Ryblewski
(IFJ PAN)
Description
We use leading-order anisotropic hydrodynamics to study an azimuthally-symmetric boost invariant
quark-gluon plasma. We impose a realistic lattice-based equation of state and perform
self-consistent anisotropic freeze-out to hadronic degrees of freedom. We then compare our results
for the full spatiotemporal evolution of the quark-gluon plasma and its subsequent freeze-out to
results obtained using 1+1d Israel-Stewart second-order viscous hydrodynamics. We find that
for small shear viscosities, 4πη/s ∼ 1, the two methods agree well for nucleus-nucleus collisions,
however, for large shear viscosity to entropy density ratios or proton-nucleus collisions we find important
corrections to the Israel-Stewart results for the final particle spectra and the total number
of charged particles. Finally, we demonstrate that the total number of charged particles produced
is a monotonically increasing function of 4πη/s in Israel-Stewart viscous hydrodynamics whereas
in anisotropic hydrodynamics it has a maximum at 4πη/s ∼ 10. For all 4πη/s > 0, we find
that for Pb-Pb collisions Israel-Stewart viscous hydrodynamics predicts more dissipative particle
production than anisotropic hydrodynamics
Authors
Dennis Bazow
Mauricio Martinez Guerrero
(The Ohio State University)
Dr
Michael Strickland
(Kent State University)
Mr
Mohammad Nopoush
(Kent State University)
Dr
Radoslaw Ryblewski
(IFJ PAN)
Ulrich Heinz
(The Ohio State University)
