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

作者：She, Zhi-Lei; Zheng, Liang; Zhou, Dai-Mei; Xie, Yi-Long; Xu, Hong-Ge; Chen, Gang^*

来源：European Physical Journal A, 2022, 58(2): 15.

DOI：10.1140/epja/s10050-022-00673-2

• PLUS AU COLLISIONS
• QCD

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 B-10+B-10, C-12+C-12, O-16+O-16, Ne-20+Ne-20, Al-27+Al-27, Ar-40+Ar-40, Cu-63+Cu-63, Ru-96+Ru-96, (197)AU+(197)AU, and U-238+U-238 collisions at root s(NN) = 200 GeV. The yield ratios of deuteron to proton, helium-3 to proton, hypertriton Lambda- to Ahyperon 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.