Running the gamut of high energy nuclear collisions

TL;DR

This paper models a wide range of high energy nuclear collisions using a hybrid approach, successfully describing experimental data across many systems and energies, and providing predictions for future O+O collisions.

Contribution

It introduces a unified hybrid framework that accurately describes bulk properties and correlations in diverse collision systems at RHIC and LHC energies.

Findings

Framework describes experimental data well across systems

Model predictions align with observed system and energy dependence

Provides predictions for future O+O collision experiments

Abstract

We present calculations of bulk properties and multiparticle correlations in a large variety of collision systems within a hybrid formalism consisting of IP-Glasma initial conditions, MUSIC viscous relativistic hydrodynamics, and UrQMD microscopic hadronic transport. In particular, we study heavy ion collisions at the Large Hadron Collider (LHC), including Pb+Pb, Xe+Xe, and O+O collisions, and Au+Au, U+U, Ru+Ru, Zr+Zr, and O+O collisions at the Relativistic Heavy Ion Collider (RHIC). We further study asymmetric systems, including p+Au, d+Au, $^3$He+Au, and p+Pb collisions at various energies as well as p+p collisions at 0.5 and 13 TeV. We describe experimental observables in all heavy ion systems well with one fixed set of parameters, validating the energy and system dependence of the framework. Many observables in the smaller systems are also well described, although they test the limits of the model. Calculations of O+O collisions provide predictions for potential future runs at RHIC and LHC.