Probing configuration of $\alpha$ clusters with spectator particles in relativistic heavy-ion collisions
| Autor: | Liu, Lu-Meng, Li, Song-Jie, Wang, Zhen, Xu, Jun, Ren, Zhong-Zhou, Huang, Xu-Guang |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physics Letters B 854, 138724 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2024.138724 |
| Popis: | We propose to use spectator particle yield ratios to probe the configuration of $\alpha$ clusters in $^{12}$C and $^{16}$O by their collisions at RHIC and LHC energies. The idea is illustrated based on initial density distributions with various $\alpha$-cluster configurations generated by a microscopic cluster model, and without $\alpha$ clusters from mean-field calculations. The multifragmentation of the spectator matter produces more spectator light nuclei including $\alpha$ clusters in collisions of nuclei with chain structure of $\alpha$ clusters, compared to those of nuclei with a more compact structure. The yield ratio of free spectator neutrons to spectator particles with mass-to-charge ratio $A/Z=2$ scaled by their masses can be practically measured by the zero-degree calorimeter (ZDC) at RHIC and LHC, serving as a clean probe free from modeling the complicated dynamics at midrapidities. Comment: 6 pages, 4 figures |
| Databáze: | arXiv |
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