# One fluid to rule them all: viscous hydrodynamic description of event-by-event central p+p, p+Pb and Pb+Pb collisions at $\sqrt{s}=5.02$ TeV

## TL;DR

This paper demonstrates that a unified viscous hydrodynamic model can successfully describe flow patterns in central p+p, p+Pb, and Pb+Pb collisions at 5.02 TeV, indicating a common hydrodynamic origin across different collision systems.

## Contribution

The study introduces a generalized Monte Carlo Glauber model with constituent quarks and applies viscous hydrodynamics to all three collision types with a single parameter set.

## Key findings

- Successfully describes elliptic and triangular flow in all systems
- Supports a common hydrodynamic origin of flow in high-energy collisions
- Uses a unified model for different collision systems

## Abstract

The matter created in central p+p, p+Pb and Pb+Pb collisions at sqrt{s}=5.02 TeV is simulated event-by-event using the superSONIC model, which combines pre-equilibrium flow, viscous hydrodynamic evolution and late-stage hadronic rescatterings. Employing a generalization of the Monte Carlo Glauber model where each nucleon possesses three constituent quarks, superSONIC describes the experimentally measured elliptic and triangular flow at central rapidity in all systems using a single choice for the fluid parameters, such as shear and bulk viscosities. This suggests a common hydrodynamic origin of the experimentally observed flow patterns in all high energy nuclear collisions, including p+p.