Speaker
Dr
SALVATORE PLUMARI
(UNIVERSITY OF CATANIA, ITALY)
Description
We investigate within a parton cascade approach at fixed $\eta/s$ ratio the effect of a temperature dependent
$\eta/s(T)$ at three different beam energies from RHIC for Au+Au at $\sqrt(s)=$62.4, 200 GeV to LHC energies for
Pb+Pb at $\sqrt(s)=$2.76 TeV. An important result is that for the different beam energies considered the
suppression of the elliptic flow due to the viscosity of the medium has different contaminations coming
from the cross-over (hadronic) or QGP phase depending on the average energy of the system. In particular, we
observe that at LHC the elliptic flow is less contaminated by the hadronic phase allowing a better study
of the QGP properties. We will show that the observed scaling of $v_{2}(p_{T})$ from RHIC to LHC energies
implies a fall and rise of $\eta/s(T)$ and allow to put a first constraint on $\eta/s(T)$.
[1] S. Plumari, A. Puglisi, F. Scardina, V. Greco, Phys.Rev. C86 (2012) 054902.
[2] S. Plumari, A. Puglisi, M. Colonna, F. Scardina, V. Greco, J.Phys.Conf.Ser. 420 (2013) 012029.
Author
Dr
SALVATORE PLUMARI
(UNIVERSITY OF CATANIA, ITALY)
Co-authors
Mr
ARMANDO PUGLISI
(INFN-LNS)
Prof.
VINCENZO GRECO
(UNIVERSITY OF CATANIA, ITALY)
