Glauber Monte Carlo predictions for ultra-relativistic collisions with ${}^{16}{\rm O}$

TL;DR

This paper uses Glauber Monte Carlo simulations to predict collective flow observables in ultra-relativistic ${}^{16}{ m O}$ collisions, comparing correlated and uncorrelated nuclear models to inform future experiments and theoretical studies.

Contribution

It introduces specific flow measures that are insensitive to hydrodynamic response and compares correlated versus uncorrelated nuclear distributions in ${}^{16}{ m O}$ collisions.

Findings

Correlated nuclear distributions have moderate effects in central collisions.

Flow measures like eccentricity ratios are approximately independent of hydrodynamic response.

Wounded quark and nucleon models yield similar results for the studied observables.

Abstract

We explore Glauber Monte Carlo predictions for the planned ultra-relativistic ${}^{16}{\rm O}$+${}^{16}{\rm O}$ and p+${}^{16}{\rm O}$ collisions, as well as for collisions of ${}^{16}{\rm O}$ on heavy targets. In particular, we present specific collective flow measures which are approximately independent on the hydrodynamic response of the system, such as the ratios of eccentricities obtained from cumulants with different numbers of particles, or correlations of ellipticity and triangularity described by the normalized symmetric cumulants. We use the state-of-the-art correlated nuclear distributions for ${}^{16}{\rm O}$ and compare the results to the uncorrelated case, finding moderate effects for the most central collisions. We also consider the wounded quark model, which turns out to yield similar results to the wounded nucleon model for the considered measures. The purpose of our study is to prepare some ground for the upcoming experimental proposals, as well as to provide input for possible more detailed dynamical studies with hydrodynamics or transport codes.