V Workshop on Particle Correlations and Femtoscopy

Session

Dynamics and the Equation of State (1/2)

14 Oct 2009, 15:30

TH Auditorium (CERN)

Conveners

Dynamics and the Equation of State (1/2)

• Yorigo Hama (Universidade de Sao Paulo, Instituto de Fisica)

1. Effects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach

Dr Hannah Petersen (University of Frankfurt), Marcus Bleicher (Uni Frankfurt)

14/10/2009, 15:30

Investigating Dynamics and the EOS with Correlations

Talk

A systematic study of HBT radii of pions, produced in heavy ion collisions in the intermediate energy regime (SPS), from an integrated (3+1)d Boltzmann+hydrodynamics approach is presented. The calculations in this hybrid approach, incorporating an hydrodynamic stage into the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport model, allow for a comparison of different equations of...

13. Transverse hydrodynamics with sudden hadronization and freeze-out

Mr Radosław Ryblewski (Institute of Nuclear Physics PAS)

14/10/2009, 16:00

Investigating Dynamics and the EOS with Correlations

Talk

The physical scenario for ultrarelativistic heavy-ion collisions is analyzed where the early dynamics of the system is dominated by the purely transverse hydrodynamic expansion (transverse hydrodynamics [1,2,3]). The local isotropization of the system in the momentum space is described in the schematic way with the help of the Landau matching conditions. The isotropization process is...

23. Study of identical and non-identical particle correlations at RHIC energies within microscopic models.

Mr Mads Stormo Nilsson (Department of Physics, University of Oslo)

14/10/2009, 16:30

Investigating Dynamics and the EOS with Correlations

Microscopic transport models are found to reproduce well many features of ultra-relativistic heavy-ion collisions. Our aim is to study the femtoscopic correlations of different particle systems: pion-pion, pion-kaon, pion-proton, and pion-Xi within the quark-gluon string model (QGSM) and ultra-relativistic quantum molecular dynamics (UrQMD) model. We are extracting space-time sizes and...

24. Observables from a 3+1D relativistic hydro solution

Dr Mate Csanad (Eotvos University, Department of Atomic Physics)

14/10/2009, 17:20

Investigating Dynamics and the EOS with Correlations

Talk

In the last several years it has been revealed that the matter produced in the collisions of the Relativistic Heavy Ion Collider (RHIC) is a nearly perfect fluid, i.e. it can be described with perfect fluid hydrodynamics. There was a long search for exact hydrodynamic models (solutions of the partial differential equations of hydrodynamics) and several models proved to be applicable. There are...

29. Azimuthally asymmetric BudaLund hydrodynamic model and fits to spectra, elliptic flow and asHBT

Andras Ster (Res. Inst. Particle & Nucl. Phys. - Hungarian Academy of Science)

14/10/2009, 17:50

Investigating Dynamics and the EOS with Correlations

Talk

We present the extension of the Buda-Lund hydrodynamic model from high energy central collisions to peripherial ones. Spectra and the elliptic flow of indentified particles are described along with the azimuthal dependence of two-particle correlation function radii in the ellipsoidally symmetric generalization of the model. Theoretical predictions were tested against RHIC data. From...

20. Significant in-medium reduction of the mass of $\eta\prime$ mesons in $\sqrt{s_\mathrm{NN}}=200\ \mathrm{GeV}$ Au+Au collisions

Mr Robert Vertesi (MTA KFKI RMKI)

14/10/2009, 18:20

Beyond Gaussians: Extracting Detailed Size and Shape Information

Talk

It is argued that the $\mathrm{U_A}(1)$ or chiral symmetry may temporarily be restored in a hot and dense medium that is created in high energy heavy ion collisions. As a consequence, the mass of the $\eta\prime$(958) mesons may be reduced to its quark model value, and the abundancy of the $\eta\prime$ mesons at low $p_T$ may be significantly enhanced. PHENIX and STAR data on the intercept...