Probing the tetrahedral $α$ clusters in relativistic $^{16}$O + $^{16}$O collisions
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| Format: | Preprint |
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2025
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| _version_ | 1866918079445860352 |
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| author | Hu, Jin-Yu Xu, Hao-jie Wang, Xiaobao Pu, Shi |
| author_facet | Hu, Jin-Yu Xu, Hao-jie Wang, Xiaobao Pu, Shi |
| contents | Relativistic $^{16}$O +$^{16}$O collisions probe the Quark-Gluon Plasma formed in small systems, while their collective phenomena illuminate the structure of $^{16}$O. Recently, various configurations of $^{16}$O from \textit{ab initio} calculations were implemented in heavy-ion models, such as the hydrodynamic model and a multiphase transport model (AMPT) to study cluster effects in relativistic $^{16}$O +$^{16}$O collisions. However, divergent predictions across configurations and models complicate interpretations. In this Letter, we isolate the impact of multi-nucleon correlations in relativistic $^{16}$O +$^{16}$O collisions while fixing the one-body density distribution of $^{16}$O. Our results show that the normalized ratios ${\rm Norm}(v_{2}\{2\}/v_{2}\{4\})$ and ${\rm Norm}(v_{2}\{2\}/v_{3}\{2\})$ effectively probe the effects of one-body density (e.g., tetrahedral symmetry) and multi-nucleon correlations (e.g., $α$ clusters). These observables provide critical constraints for refining heavy-ion models, essential for investigating cluster configurations in light nuclei through relativistic heavy-ion collisions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_01493 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the tetrahedral $α$ clusters in relativistic $^{16}$O + $^{16}$O collisions Hu, Jin-Yu Xu, Hao-jie Wang, Xiaobao Pu, Shi Nuclear Theory Nuclear Experiment Relativistic $^{16}$O +$^{16}$O collisions probe the Quark-Gluon Plasma formed in small systems, while their collective phenomena illuminate the structure of $^{16}$O. Recently, various configurations of $^{16}$O from \textit{ab initio} calculations were implemented in heavy-ion models, such as the hydrodynamic model and a multiphase transport model (AMPT) to study cluster effects in relativistic $^{16}$O +$^{16}$O collisions. However, divergent predictions across configurations and models complicate interpretations. In this Letter, we isolate the impact of multi-nucleon correlations in relativistic $^{16}$O +$^{16}$O collisions while fixing the one-body density distribution of $^{16}$O. Our results show that the normalized ratios ${\rm Norm}(v_{2}\{2\}/v_{2}\{4\})$ and ${\rm Norm}(v_{2}\{2\}/v_{3}\{2\})$ effectively probe the effects of one-body density (e.g., tetrahedral symmetry) and multi-nucleon correlations (e.g., $α$ clusters). These observables provide critical constraints for refining heavy-ion models, essential for investigating cluster configurations in light nuclei through relativistic heavy-ion collisions. |
| title | Probing the tetrahedral $α$ clusters in relativistic $^{16}$O + $^{16}$O collisions |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2507.01493 |