Highly-anisotropic hydrodynamics for central collisions

TL;DR

This paper develops an advanced anisotropic hydrodynamics model with realistic equations and freeze-out processes, applied to central proton-nucleus collisions, revealing significant differences in hadron spectra compared to traditional viscous hydrodynamics.

Contribution

It introduces a leading-order anisotropic hydrodynamics framework with realistic equations of state and self-consistent freeze-out, applied to proton-nucleus collisions.

Findings

Hadron spectra are highly sensitive to the hydrodynamic approach used.

Significant differences observed between anisotropic and viscous hydrodynamics results.

Model provides a more realistic description of collision dynamics.

Abstract

The framework of leading-order anisotropic hydrodynamics is supplemented with realistic equation of state and self-consistent freeze-out prescription. The model is applied to central proton-nucleus collisions. The results are compared to those obtained within standard Israel-Stewart second-order viscous hydrodynamics. It is shown that the resulting hadron spectra are highly-sensitive to the hydrodynamic approach that has been used.