Speaker
Ekaterina Retinskaya
(CEA)
Description
We present a combined analysis of elliptic and triangular flow data
from LHC and RHIC using viscous relativistic hydrodynamics. Elliptic
flow v2 in hydrodynamics is proportional to the participant
eccentricity eps2 and triangular flow is proportional to the
participant triangularity eps3, which means
vn_exp=(v_n/eps_n)_hydro*eps_n, n=2,3. Experimental data for v2 and v3
combined with hydro calculations of v_n/eps_n thus provide us with the
initial anisotropies eps2 and eps3. By varying free parameters in the
hydro calculation (in particular the shear viscosity), we obtain
an allowed band in the (eps2, eps3) plane.
Comparison with Monte-Carlo models of the initial state allows us to
exclude several of these models.
Author
Ekaterina Retinskaya
(CEA)
Co-authors
Dr
Jean-Yves Ollitrault
(CNRS)
Matthew Luzum
(McGill University)
