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HK: Fachverband Physik der Hadronen und Kerne
HK 9: Heavy-Ion Collisions and QCD Phases II
HK 9.2: Vortrag
Montag, 11. März 2024, 17:15–17:30, HBR 62: EG 05
Simulating final-state electromagnetic interaction in heavy-ion collisions at energy of few GeV — •Szymon Harabasz1, Wojciech Florkowski3, Tetyana Galatyuk1, 4, Malgorzata Gumberidze4, Radoslaw Ryblewski2, Piotr Salabura3, and Joachim Stroth4, 5 — 1TU Darmstadt — 2Institute of Nuclear Physics PAS — 3Jagiellonian University in Krakow — 4GSI, Darmstadt — 5Institut für Kernphysik, GU Frankfurt
It has been shown that transverse-mass and rapidity spectra of p and π± produced in Au-Au collisions at √sNN = 2.4 GeV are well reproduced by thermal emission from a spheroid single freeze-out hypersurface [1]. To better understand the particle spectra, it is necessary to account for the effect of electromagnetic interactions. In central collisions at relatively low energies, i.e., of few GeV, incoming nucleons are largely stopped in the interaction region, and high positive electric charge density is generated. The electromagnetic field accelerates positively charged particles, and decelerates negatively charged ones.
In order to simulate this effect in THERMINATOR 2, a direct solution to relativistic Newton equation has been implemented, including electromagnetic forces between particles.
This work was supported in part by TU Darmstadt, Darmstadt (Germany): HFHF, ELEMENTS:500/10.006, GSI F&E, DAAD PPP Polen 2018/57393092; Goethe-University, Frankfurt(Germany): HFHF, ELEMENTS:500/10.006, GET_INvolved Programme of FAIR/GSI.
[1] S. Harabasz et al., Phys.Rev.C 107 (2023) no.3, 034917
Keywords: Thermal model; Bulk properties; Freeze-out; Fireball; Electromagnetic interaction