The physics mechanisms of light and heavy flavor $v_{2}$ and mass ordering in AMPT

TL;DR

This paper investigates the underlying physics mechanisms responsible for the mass ordering of elliptic flow ($v_{2}$) in light and heavy flavor particles in heavy ion and small system collisions using the AMPT model.

Contribution

It provides a detailed analysis of the origin of mass ordering of $v_{2}$ and explores the production mechanism of charm $v_{2}$ within the AMPT framework.

Findings

AMPT successfully describes $v_{2}$ in both large and small systems.

Mass ordering of $v_{2}$ is linked to specific physics mechanisms.

Charm $v_{2}$ production is influenced by the escape mechanism.

Abstract

A Multi-Phase Transport (AMPT) model has been shown to describe experimental data well, such as the bulk properties of particle spectra and elliptic anisotropy ($v_{2}$) in heavy ion collisions. Recent studies have shown that AMPT describes the $v_{2}$ data in small system collisions as well. In these proceedings, we first investigate the origin of the mass ordering of identified hadrons $v_{2}$ in heavy ion as well as small system collisions. We then study the production mechanism of the charm $v_{2}$ in light of the escape mechanism for the light quark $v_{2}$.