Quark Matter 2012

Session

Parallel 3A: Global & Collective Dynamics (Chair T. Kodama)

50

15 Aug 2012, 08:30

75. Bulk viscosity, particle spectra and flow in heavy-ion collisions

Thomas Schaefer (N)

15/08/2012, 08:30

Global and collective dynamics

Oral Presentation

We study the effects of bulk viscosity on $p_T$ spectra and elliptic flow in heavy ion collisions. For this purpose we compute the dissipative correction $\delta f$ to the single particle distribution functions in leading-log QCD, and in kinetic models of a hadronic resonance gas. We find that for a near conformal fluid the bulk viscosity is suppressed by two powers of the conformal...

123. Initial state fluctuations and higher harmonic flow in heavy-ion collisions

Bjoern Schenke

15/08/2012, 08:50

Global and collective dynamics

Oral Presentation

We present recent developments in describing anisotropic flow in heavy-ion collisions at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory and the Large Hadron Collider (LHC) at CERN with a relativistic 3+1 dimensional viscous event-by-event hydrodynamic simulation. We present results for elliptic, triangular and higher harmonic flow coefficients, including...

366. Higher harmonics flow measurement of charged hadrons and electrons in wide kinematic range with PHENIX VTX tracker

Dr maki kurosawa (RBRC)

15/08/2012, 09:10

Oral Presentation

Collective flow is one of the key measurements to study the hot and dense matter created in heavy ion collisions, because it relates closely to early evolution of the matter. In particular, higher harmonic flow measurements plays an important role in constraining theoretical model calculations describing properties of the matter. The silicon vertex tracker (VTX) was installed into the...

368. Two- and Multi-particle cumulant measurements of vn and isolation of flow and nonflow in 200 GeV Au+Au Collisions by STAR

Li Yi (Purdue University)

15/08/2012, 09:30

Oral Presentation

Azimuthal anisotropic flows vn, arising from the anisotropic collision geometry, reflect the hydrodynamic properties of the quark gluon plasma created in relativistic heavy-ion collisions. A long standing issue in vn measurements is the contamination of nonflow, caused by intrinsic particle correlations unrelated to the collision geometry. Nonflow limits, in part, the precise extraction of the...

201. Study of higher harmonics based on (3+1)-dimensional relativistic viscous hydrodynamics

Prof. Chiho Nonaka (Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI) and Department of Physics, Nagoya University)

15/08/2012, 09:50

Global and collective dynamics

Oral Presentation

Currently a possible origin of "Mach-Cone-like structure" is regarded as triangular flow and higher harmonics which are produced through event-by-event fluctuated initial states, which is a push to implement effects of event-by-event fluctuations in the initial conditions of relativistic hydrodynamic models. When the hydrodynamic simulation is performed with initial conditions with the...

169. Systematic Investigation of Partonic Collectivity through Centrality Dependence of Elliptic Flow of Multi-strange Hadrons in Au+Au collisions at 200 GeV in STAR

Mr NASIM MD (Variable Energy Cyclotron Centre)

15/08/2012, 10:10

Global and collective dynamics

Oral Presentation

One of the main goals of the STAR experiment at Relativistic Heavy Ion Collider (RHIC) is to study the properties of the QCD matter at extremely high energy and parton densities, created in the heavy-ion collisions. Understanding the partonic collectivity through the measurement of elliptic flow ($v_{2}$) of multi-strange hadrons ($\phi$, $\Xi$ and $\Omega$) is believed to be a sensitive...