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SUMMARY:PHENIX Measurements of Higher-order Flow Harmonics for Identified
Charged Hadrons in Au+Au Collisions at 39 – 200 GeV
DTSTART;VALUE=DATE-TIME:20120814T183500Z
DTEND;VALUE=DATE-TIME:20120814T185500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308629@indico.cern.ch
DESCRIPTION:Speakers: YI GU (D)\nCollective flow measurements continue to
play an important role in ongoing efforts to map out the temperature depen
dence of the transport coefficient $\\frac{\\eta}{s}(T)$\, for the strongl
y interacting matter produced in heavy ion collisions at RHIC. Recently\,
PHENIX has performed a detailed set of measurements of the higher-order fl
ow coefficients ($v_{n}$ for n=2\,3\,4)\, for both inclusive and identifie
d charged hadrons. The results from these new measurements in Au+Au colli
sions will be presented\, as a function of $p_T$\, centrality and beam col
lision energy\, in concert with several scaling properties observed for th
ese data. The role of these results as additional constraints for $\\frac{
\\eta}{s}(T)$ will also be discussed.\n\nhttps://indico.cern.ch/event/1810
55/contributions/308629/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308629/
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BEGIN:VEVENT
SUMMARY:Non-linear anisotropic flow with ideal and viscous hydrodynamics
DTSTART;VALUE=DATE-TIME:20120814T193500Z
DTEND;VALUE=DATE-TIME:20120814T195500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308397@indico.cern.ch
DESCRIPTION:Speakers: Li Yan (Stony Brook University)\nThe particle spectr
um from RHIC and LHC can be decomposed into harmonic series that defines t
he dipolar flow $v_1$\, the elliptic flow $v_2$\, the triangular flow $v_3
$\, and $v_4$\, and $v_5$ etc. To understand the origin of higher order ha
rmonics\, we extend the linear response formalism for anisotropic flow to
include the non-linear response which results from the interactions betwee
n the lowest harmonics and the elliptic flow. For example\, $v_{5(23)}/(\\
epsilon_2\n\\epsilon_3)$ records the $v_5$ generated by the non-linear int
eractions between $v_2$ and $v_3$. Ideal and viscous hydrodynamic calculat
ions show that the non-linear response becomes dominant for n=4 and n=5 in
non-central collisions. This trend is much more pronounced for viscous hy
drodynamics where the linear response for n=4 and n=5 is negligible.\n\nht
tps://indico.cern.ch/event/181055/contributions/308397/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308397/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shocks in Quark-Gluon Plasma
DTSTART;VALUE=DATE-TIME:20120814T181500Z
DTEND;VALUE=DATE-TIME:20120814T183500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308461@indico.cern.ch
DESCRIPTION:Speakers: Edward Shuryak (stony brook university)\nLarge energ
y deposition from LHC quenching jets restarted interest\nto shock formatio
n. Shocks also have theoretical significance as\nthe simplest out-of-equil
ibrium setting without time dependence.\nWhile weak shocks have small grad
ients and can be\ntreated hydrodynamically in the Navier-Stokes (NS) appro
ximation\, \nthe ones without a small parameter (strong shocks) needs othe
r methods.\nTwo of those will be applied: (i) the ``resummed hydrodynamics
" proposed\nearlier by Lublinsky and myself\; and (ii) AdS/CFT corresponde
nce\, which\nuses the modified Einstein equations. In the latter case we a
pply \nnovel variational approach and find approximate solution good to wi
thin\nfraction of a percent. The conclusion from both treatments is that t
he\nstrong shocks deviate from NS only be few percent\, in the direction\n
of thinner shocks. We also discuss how shock formation shoulc modify the\n
predictions for jet-hadron and hard hadron-hadron correlators.\n\nhttps://
indico.cern.ch/event/181055/contributions/308461/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308461/
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BEGIN:VEVENT
SUMMARY:Collision Energy Dependence of Viscous Hydrodynamic Flow in Relat
ivistic Heavy-Ion Collisions
DTSTART;VALUE=DATE-TIME:20120814T191500Z
DTEND;VALUE=DATE-TIME:20120814T193500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308418@indico.cern.ch
DESCRIPTION:Speakers: Chun Shen (Ohio State University)\nWe present a syst
ematic study on the evolution of hadron spectra and their azimuthal anisot
ropy from the lowest collision energy studied at the Relativistic Heavy Io
n Collider (RHIC)\, √s = 7.7A GeV\, to the highest energy reachable at t
he Large Hadron Collider (LHC)\, √s = 5500A GeV [1]. As the collision en
ergy increases\, the resulting increases of the initial temperature\, and
fireball lifetime\, as well as the evolution of the centrality dependence
of final charged particle multiplicity are quantitatively studied and comp
ared between the two most popular initial state models\, the Monte Carlo G
lauber and Monte-Carlo Kharzeev-Levin-Nardi (MC-KLN) models. For Glauber m
odel initial conditions with a small specific shear viscosity eta/s = 0.08
\, the differential charged hadron elliptic flow v_2^{ch}(pT\, √s) is fo
und to exhibit a very broad maximum as a function of √s around top RHIC
energy\, rendering it almost independent of collision energy for 39 \n\nh
ttps://indico.cern.ch/event/181055/contributions/308418/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308418/
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BEGIN:VEVENT
SUMMARY:Derivation of transient relativistic fluid dynamics from the Boltz
mann equation for a multi-component system
DTSTART;VALUE=DATE-TIME:20120814T195500Z
DTEND;VALUE=DATE-TIME:20120814T201500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308648@indico.cern.ch
DESCRIPTION:Speakers: Gabriel Denicol (Frankfurt University)\nWe present a
general derivation of relativistic fluid dynamics from the relativistic B
oltzmann equation using the method of moments [1]. The main difference bet
ween our approach and the traditional 14-moment approximation is that we d
o not close the fluid-dynamical equations of motion by truncating the expa
nsion of the single-particle momentum distribution function. Instead\, we
keep all the terms in the moment expansion and truncate the exact equation
s of motion for these moments according to a systematic power counting sch
eme in Knudsen and inverse Reynolds numbers. We apply this formalism to ob
tain an approximate expression for the non-equilibrium single-particle mom
entum distribution function of a hadron resonance gas. Then\, we investiga
te the implications of our new formalism in the freeze-out description of
the hadron resonance gas and compare it with the method traditionally used
in heavy-ion collisions\, the 14-moment approximation.\n\n[1] G.S. Denico
l\, H. Niemi\, E. Molnar\, and D.H. Rischke\, arXiv:1202.4551 [nucl-th].\n
\nhttps://indico.cern.ch/event/181055/contributions/308648/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308648/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Beam Energy Dependence of First and Higher-Order Flow Harmonics fr
om the STAR Experiment at RHIC
DTSTART;VALUE=DATE-TIME:20120814T185500Z
DTEND;VALUE=DATE-TIME:20120814T191500Z
DTSTAMP;VALUE=DATE-TIME:20200930T151423Z
UID:indico-contribution-25237-308750@indico.cern.ch
DESCRIPTION:Speakers: Yadav Pandit (Kent State University)\nA primary goal
of the RHIC Beam Energy Scan (BES) is to search for evidence of a transit
ion \nbetween a hadron gas and a Quark Gluon Plasma. The dependence of $v_
{1}$ and higher flow \nharmonics on system size and beam energy may be sen
sitive to the degrees of\nfreedom in the system\, as a consequence of earl
y pressure gradients and a potential softening in\nthe equation of state.
In this talk\, we present STAR measurements of $v_{1}$ for $\\pi^\\pm$\, $
K^\\pm$\,\nprotons and antiprotons along with $v_{n}$ for charged particle
s from 7.7 GeV to 200 GeV. A striking observation is that\nthe $v_1$ slope
$F = dv_1 /dy$ for net protons\, which is an estimate of the directed fl
ow contribution from baryon number transported to the midrapidity region\,
changes sign twice within the BES energy range. In contrast\, $F$ for all
other particle types is negative at all studied energies. For charged par
ticles\, we observe a local minimum in integrated ($0.2 \n\nhttps://indico
.cern.ch/event/181055/contributions/308750/
LOCATION: Regency 2/3
URL:https://indico.cern.ch/event/181055/contributions/308750/
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