# Sensitivity of D meson azimuthal anisotropies to system size and nuclear structure

## TL;DR

This paper investigates how the azimuthal anisotropies of D mesons in heavy-ion collisions are affected by system size and nuclear structure, using simulations to compare PbPb and XeXe collisions at the LHC.

## Contribution

It introduces a detailed simulation study of D meson flow and suppression, highlighting the sensitivity to nuclear deformation and system size effects.

## Key findings

- D meson azimuthal anisotropies are sensitive to Xenon nuclear structure in central collisions.
- Smaller system size in XeXe suppresses D meson flow in mid-central collisions.
- D meson suppression varies with collision system and centrality.

## Abstract

Recent experimental data at the Large Hadron Collider (LHC) confirmed that the soft sector azimuthal anisotropies in central XeXe collisions are sensitive to deformations in the wave function of the Xenon nucleus. Additionally, the CMS experiment found that D meson flow is slightly suppressed compared to other particle species when considering quark number scaling in small systems of pPb compared to PbPb. In this talk we used the D and B Mesons Modular (DAB-MOD) code coupled to Trento+v-USPhydro to calculate the $R_{AA}$ and $v_n$'s of D mesons using different energy loss models and Langevin techniques. Comparing D mesons $R_{AA}$ and $v_n$ in PbPb to XeXe collisions it is found that in central collisions D meson azimuthal anisotropies are sensitive to details in the nuclear structure wave function of Xenon. Additionally, we find that in mid-central collisions the smaller system size of XeXe suppresses D meson flow.