Particlization in fluid dynamical simulations of heavy-ion collisions: The iS3D module
Abstract
The iS3D particlization module simulates the emission of hadrons from heavy-ion collisions via Monte-Carlo sampling of the Cooper-Frye formula which converts fluid dynamical information into local phase-space distributions for hadrons. The code package includes multiple choices for the non-equilibrium correction to these distribution functions: the 14-moment approximation, first-order Chapman-Enskog expansion, and two types of modified equilibrium distributions. This makes it possible to explore to what extent heavy-ion experimental data are sensitive to different choices for , presently the main source of theoretical uncertainty in the particlization stage. We validate our particle sampler with a high degree of precision by generating several million hadron emission events from a longitudinally boost-invariant hypersurface and comparing the event-averaged particle spectra and space-time distributions to the Cooper-Frye formula.
Keywords
Cite
@article{arxiv.1912.08271,
title = {Particlization in fluid dynamical simulations of heavy-ion collisions: The iS3D module},
author = {Mike McNelis and Derek Everett and Ulrich Heinz},
journal= {arXiv preprint arXiv:1912.08271},
year = {2020}
}