Setting the string shoving picture in a new frame

TL;DR

This paper enhances a string-based model to better simulate flow effects in high-energy heavy ion collisions, showing potential but requiring further refinement to match experimental data.

Contribution

The paper improves the shoving model to better generate flow effects in heavy ion collisions within a string-based framework.

Findings

The improved model can generate flow effects in ext{A-A} collisions.

Current implementation underestimates flow compared to measurements.

Identified shortcomings suggest directions for future model refinement.

Abstract

Based on the recent success of the \angantyr model in describing multiplicity distributions of the hadronic final state in high energy heavy ion collisions, we investigate how far one can go with a such a string-based scenario to describe also flow effects measured in such collisions. For this purpose we improve our previous so-called \textit{shoving} model, where strings that are close in space--time tend to repel each other in a way that could generate anisotropic flow, and we find that this model can indeed generate such flows in \AA\ collisions. The flow generated is not quite enough to reproduce measurements, but we identify some short-comings in the presented implementation of the model that, when fixed, could plausibly give a more realistic amount of flow.