Collision system size dependence of light (anti-)nuclei and (anti-)hypertriton production in high energy nuclear collisions

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 58; no. 2
• Main Authors: She, Zhi-Lei, Zheng, Liang, Zhou, Dai-Mei, Xie, Yi-Long, Xu, Hong-Ge, Chen, Gang
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2022; Springer Nature B.V
• Subjects: Atomic collisions; Atomic properties; Carbon 12; Coalescing; Deuterons; Emission analysis; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Nuclei; Particle and Nuclear Physics; Partons; Physics; Physics and Astronomy; Protons; Regular Article - Theoretical Physical; Relativistic Heavy Ion Collider; Strangeness
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/s10050-022-00673-2

The collision system size dependence of light (anti-)nuclei and (anti-)hypertriton production is investigated using the parton and hadron cascade (PACIAE) model plus dynamically constrained phase-space coalescence (DCPC) model in 10 B+ 10 B, 12 C+ 12 C, 16 O+ 16 O, 20 Ne+ 20 Ne, 27 Al+ 27 Al, 40 Ar+ 40 Ar, 63 Cu+ 63 Cu, 96 Ru+ 96 Ru, 197 Au+ 197 Au, and 238 U+ 238 U collisions at s NN = 200 GeV. The yield ratios of deuteron to proton, helium-3 to proton, hypertriton to Λ -hyperon are predicted for various collision systems. In this study, we find the yield ratios between anti-(hyper-)nuclei are significantly suppressed compared to the ratios between the (hyper-)nuclei. It is also interesting to see the strangeness population factor s 3 shows a non-smooth dependence of atomic mass number A around 12 to 27, which can be related to the relative size of the produced nuclei and the emission source of different collision systems. Our present study provides a reference for a upcoming collision system scan program at RHIC.