Sep 18 – 22, 2017
Polish Academy of Arts and Sciences
Europe/Warsaw timezone

Examination of heavy-ion collisions using EPOS model

Not scheduled
Karolina Lanckorońska Hall (catering during the poster session in the PAU’s courtyard)

Karolina Lanckorońska Hall (catering during the poster session in the PAU’s courtyard)


Maria Stefaniak (Warsaw University of Technology)


Collisions of heavy-ions are major method used to study properties of matter. Such studies are
performed with comparison of experimental data and model simulations.

One of theoretical description is Parton-Based Gribov-Regge theory included in the
phenomenological model EPOS. It was originally created to explain the processes at the highest
energies obtained with LHC complex. EPOS gives possibility to study different observables what
helps to understand better processes present during not only as proton-proton collisions but also
as during much more complex reactions with heavy-ions. Various collision energy scans are
considered as well.

So far the EPOS model have been used to describe higher collision energies obtained with RHIC
complexes and LHC data. However, there is another interesting program currently under
investigation at RHIC: Beam Energy Scan (BES), conducted at Brookhaven National Laboratory.
Main goals of this project are to examine the Phase Diagram, study the characteristics of the firstorder
phase transition between Hadron Gas and Quark Gluon Plasma phases of nuclear matter.
The search of Critical Point between first-order phase transition and transition of "cross-over" is
another absorbing topic. RHIC, one of the biggest accelerators in the world, collides beams of Au
nuclei at selected energies as: $\sqrt{s_{NN}} - 7.7, 11.5, 19.6, 27, 39$, and 62.4 GeV. The variety
of initial conditions provides covering as widest part of Phase Diagram of nuclear matter as

Simulated with EPOS data will be verified using two-particles femtoscopic correlations, which allow
one to measure the size of sources determined by newly created particles. The studies of elliptic
flow will be performed as well.

Primary author

Maria Stefaniak (Warsaw University of Technology)

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