https://doi.org/10.1051/epjconf/202225913002
In-medium effects in strangeness production in heavy-ion collisions at (sub-) threshold energies
1 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, 64291 Darmstadt, Germany
2 Institute of Space Sciences (ICE, CSIC), Campus Universitat Autonoma de Barcelona, Carrer de Can Magrans, 08193 Bellaterra, Spain
3 Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain
4 Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main, Germany
5 Faculty of Science and Technology, University of Stavanger, 4036 Stavanger, Norway
6 Excellence Cluster ’Origin and Structure of the Universe’, 85748 Garching, Germany
7 Physik Department E62, Technische Universität München, 85748 Garching, Germany
8 SUBATECH UMR 6457 (IMT Atlantique, Université de Nantes, IN2P3/CNRS), 4 Rue Alfred Kastler, F-44307 Nantes, France
9 Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany
10 Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtz Center for Heavy Ion Physics, Campus Frankfurt, 60438 Frankfurt, Germany
* e-mail: t.song@gsi.de
Published online: 1 February 2022
We study the in-medium effects in strangeness production in heavyion collisions at (sub-)threshold energies based on the microscopic Parton-Hadron-String Dynamics (PHSD) transport approach. The in-medium modifications of the antikaon properties are described via the self-consistent coupledchannel unitarized scheme based on a SU(3) chiral Lagrangian while the inmedium modification of kaons are accounted via the kaon-nuclear potential, which is assumed to be proportional to the local baryon density. We find that the modifications of (anti)kaon properties in nuclear matter are necessary to explain the experimental data in heavy-ion collisions.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
