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Light and hyper nuclei formation at $\sqrt{s_{\text{NN}}} =$ 3 GeV Au+Au collisions using Wigner coalescence approach

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arXiv:2404.13582v1 Announce Type: new
Abstract: The production of light nuclei and hyper-nuclei in heavy-ion collisions, particularly at high baryon density, is crucial for understanding dynamical evolution of collision system and exploring the internal state of nuclear matter of compacted stellar. Despite being a topic of ongoing debate, an improved theoretical understanding is needed. In this work, production of light nuclei ($d$, $t$, $^{3}$He, $^{4}$He) and hyper-nuclei ($^{3}_{\Lambda}$H, $^{4}_{\Lambda}$H) was investigated using the JAM microscopic transport model combined with an afterburner coalescence process at $\sqrt{s_{\text{NN}}} =$ 3 GeV Au+Au collisions. In the coalescence process, the formation of a specific nucleus is determined by its Wigner function. The calculated $\mathrm{p_T}$ spectra, average $\mathrm{p_T}$, and rapidity distributions were compared with the measurements from the STAR experiment. We investigated the dynamic information carried by light nuclei, and determined the averaged spatial distance $\langle \Delta R \rangle$ and momentum difference $\langle \Delta P \rangle$ of constituent nucleons ($\Lambda$) for each nucleus species.

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