The PHOBOS Glauber Monte Carlo

TL;DR

This paper presents a Monte Carlo implementation of the Glauber Model used by the PHOBOS experiment to calculate initial geometric quantities in heavy ion collisions, providing a detailed description and user guide.

Contribution

It introduces a specific Monte Carlo Glauber Model implementation for heavy ion collision analysis, including assumptions and usage instructions.

Findings

Consistent geometric calculations across RHIC experiments

Implementation details of the Monte Carlo Glauber Model

User guide for the PHOBOS Glauber Monte Carlo

Abstract

``Glauber'' models are used to calculate geometric quantities in the initial state of heavy ion collisions, such as impact parameter, number of participating nucleons and initial eccentricity. The four RHIC experiments have different methods for Glauber Model calculations, leading to similar results for various geometric observables. In this document, we describe an implementation of the Monte Carlo based Glauber Model calculation used by the PHOBOS experiment. The assumptions that go in the calculation are described. A user's guide is provided for running various calculations.