Hydrodynamic predictions for 5.44 TeV Xe+Xe collisions

TL;DR

This paper uses hydrodynamic simulations to predict particle production and flow observables in Xe+Xe collisions at the LHC, testing fluid dynamics scaling laws with a smaller system size.

Contribution

It provides the first detailed hydrodynamic predictions for Xe+Xe collisions at 5.44 TeV, exploring system size effects on flow and particle production.

Findings

Predicted mean transverse momentum varies with collision centrality.

Anisotropic flow coefficients show specific scaling behaviors.

Fluctuations in flow observables are quantified.

Abstract

We argue that relativistic hydrodynamics is able to make robust predictions for soft particle production in Xe+Xe collisions at the CERN Large Hadron Collider (LHC). The change of system size from Pb+Pb to Xe+Xe provides a unique opportunity to test the scaling laws inherent to fluid dynamics. Using event-by-event hydrodynamic simulations, we make quantitative predictions for several observables: mean transverse momentum, anisotropic flow coefficients, and their fluctuations. Results are shown as function of collision centrality.