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HK: Fachverband Physik der Hadronen und Kerne
HK 69: Heavy-Ion Collisions and QCD Phases XVI
HK 69.4: Talk
Thursday, March 14, 2024, 16:30–16:45, HBR 62: EG 05
Dynamic light Nuclei Production in SMASH — •Martha Ege2,3, Justin Mohs2,3, and Hannah Elfner1,2,3 — 1Gesellschaft für Schwerionenforschung — 2Frankfurt Institute for Advanced Studies — 3Goethe Universität Frankfurt am Main
The study of the QCD phase diagram and in particular the search for the critical endpoint and the first-order phase transition between the QGP and the hadronic phase at high µB is one of the main goals of heavy-ion physics. Since for the first order phase transition large fluctuations of the net baryon density are expected, we can assume that the production of light nuclei is sensitive to the critical endpoint and the phase transition. Therefore it is of major interest to get a better understanding about how light nuclei are formed in heavy-ion collisions.
In this work we investigate the production of light nuclei such as deuteron, triton, helium, and hypertriton in Au-Au collisions at different energies from the RHIC beam energy scan. We study the afterburner calculations for the light nuclei production in the framework of the hadronic transport approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons). The nuclei are produced via pion and nucleon catalysis reactions. In this approach a stochastic collision criterion is implemented to realize both 2↔3 and 2↔4 reactions. In this work spectra and multiplicities of light nuclei will be presented. We will investigate the production time and the origin of the light nuclei in detail. The results are compared to recent experimental data from the STAR collaboration.
Keywords: light nuclei production; transport approach; theory; multiparticle interactions; SMASH