18-22 September 2023
GSI Darmstadt, Germany
Europe/Berlin timezone

Towards constraints on the Equation of State with SMASH

19 Sep 2023, 12:30
Main Lecture Hall (GSI Darmstadt, Germany)

Main Lecture Hall

GSI Darmstadt, Germany

Südbau (SB1), GSI Campus
Oral Transport model simulations of heavy-ion reactions Transport model simulations of heavy-ion reactions


Justin Mohs (Goethe University Frankfurt)


In this work, we aim to put constraints on the equation of state of nuclear matter by comparing transport calculations with SMASH to the recent high-precision data from the HADES experiment.

In order to achieve reliable constraints, we first investigate different methods of taking light nuclei formation into account, as a large fraction of nucleons is bound to nuclei. We find that flow coefficients of protons are sensitive to light nuclei formation at small transverse momenta, but at large $p_T$, one can extract information about the nuclear potential in a more controlled way.

We further improve the model by including a momentum-dependent term in the nuclear potential and show that this improves the description of experimental data for several observables, such as the flow coefficients of protons and particle spectra for different species.

A first estimate for the equation of state is presented, but more importantly, this work lays a basis for quantitative constraints using Bayesian methods in the future.

Primary author

Justin Mohs (Goethe University Frankfurt)


Hannah Elfner (GSI Helmholtzzentrum für Schwerionenforschung GmbH(GSI))

Presentation Materials