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arXiv · 2108.05259

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

Zhi-Lei She·Gang Chen·Dai-Mei Zhou·Liang Zheng·Yi-Long Xie·Hong-Ge Xu
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Abstract

The production of light (anti-)nuclei and (anti-)hypertriton in a recent collsion system size scan program proposed for the STAR experiment at the Relativistic Heavy Ion Collider (RHIC) is investigated by using the dynamically constrained phase-space coalescence model and the parton and hadron cascade model. The collision system dependence of yield ratios for deuteron to proton, helium-3 to proton, and hypertriton to $\Lambda$-hyperon with the corresponding values for antiparticles is predicted. The work presents that for the yield ratios a significant difference exists between (hyper)nuclei and their anti-(hyper)nuclei. Besides, much more suppression for (anti-)hypernuclei than light (anti-)nuclei is present. We further investigate strangeness population factors $s_3$ as a function of atomic mass number $A$. Our present study can provide a reference for a upcoming collision system scan program at RHIC.

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Zhi-Lei She, Gang Chen, Dai-Mei Zhou, Liang Zheng, Yi-Long Xie, Hong-Ge Xu. 2021-08-11. Collision system size scan for light (anti-)nuclei and (anti-)hypertriton production in high energy nuclear collisions. https://doi.org/10.1140/epja/s10050-022-00673-2

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