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

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

doi:10.1140/epja/s10050-022-00673-2

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2022) 58: 15
https://doi.org/10.1140/epja/s10050-022-00673-2

Regular Article - Theoretical Physical

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

Zhi-Lei She¹^,2, Liang Zheng², Dai-Mei Zhou³, Yi-Long Xie², Hong-Ge Xu² and Gang Chen²^f

¹ Institute of Geophysics and Geomatics, China University of Geosciences, 430074, Wuhan, China
² School of Mathematics and Physics, China University of Geosciences, 430074, Wuhan, China
³ Institute of Particle Physics, Central China Normal University, 430079, Wuhan, China

^f chengang1@cug.edu.cn

Received: 30 October 2021
Accepted: 23 January 2022
Published online: 3 February 2022

Abstract

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+B, C+C, O+O, Ne+Ne, Al+ Al, Ar+Ar, Cu+Cu, Ru+Ru, Au+Au, and U+U collisions at = 200 GeV. The yield ratios of deuteron to proton, helium-3 to proton, hypertriton to -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 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.