A comparison study of collisions at relativistic energies involving light nuclei

TL;DR

This study compares collisions involving light nuclei at relativistic energies using the AMPT model, highlighting the sensitivity of flow ratios to nuclear structure and providing reference insights for future experiments.

Contribution

It offers a detailed comparison of light nucleus collisions at different energies and suggests measuring flow ratios to probe nuclear structure effects.

Findings

Flow ratios are sensitive to light nuclei structure.

Measurement near target rapidity enhances structure sensitivity.

Provides reference for future light nucleus collision studies.

Abstract

We present extensive comparisons of $^{16}$O+$^{16}$O collisions at the center-of-mass energy per nucleon pair $\sqrt{s_{NN}}=200$ GeV and $^{208}$Pb+$^{16}$O collisions at $\sqrt{s_{NN}}=68.5$ GeV as well as $^{20}$Ne+$^{20}$Ne collisions at $\sqrt{s_{NN}}=200$ GeV and $^{208}$Pb+$^{20}$Ne collisions at $\sqrt{s_{NN}}=68.5$ GeV based on a multiphase transport (AMPT) model. We recommend measuring the ratio of the elliptic flow to the triangular flow, which shows appreciable sensitivity to the structure of light nuclei as also found in other studies. This is especially so if the observable is measured near the target rapidity in $^{208}$Pb+$^{16}$O or $^{208}$Pb+$^{20}$Ne collisions, as originally found in the present study. Our study serves as a useful reference for understanding the structure effect on observables in collisions involving light nuclei under analysis or on the schedule.