Abstract
The properties of spectator matter created in 197Au–197Au and 208Pb–208Pb collisions with energies typical for the NICA accelerator complex were studied with the Abrasion–Ablation Monte Carlo for Colliders (AAMCC) model. We review predictions made with AAMCC for several characteristics of spectator matter and compare them with available data. The sum of squares of spectator charges per spectator nucleon is proposed as an additional indicator of collision centrality in BM@N and MPD experiments at NICA. The forward-backward asymmetry of free spectator nucleons is calculated and compared to the asymmetry of the total volume of spectator matter. The sensitivity of calculated yields of spectator neutrons in central 208Pb‒208Pb collisions to the presence of neutron skin in 208Pb is demonstrated.
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ACKNOWLEDGMENTS
One of the authors (I.P.) is grateful to Dariusz Miskowiec and Chiara Oppedisano for the discussions that stimulated the investigation of the effects of neutron skin.
Funding
The study was carried out with the financial support of the Russian Foundation for Basic Research within the framework of the scientific project no. 18-02-40035-mega.
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Pshenichnov, I.A., Kozyrev, N.A., Nepeivoda, R.S. et al. Properties of Spectator Matter in Nuclear Collisions at NICA. Phys. Part. Nuclei 52, 591–597 (2021). https://doi.org/10.1134/S1063779621040493
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DOI: https://doi.org/10.1134/S1063779621040493