The glasma initial state at the LHC

TL;DR

This paper uses numerical Classical Yang Mills calculations to analyze the initial Glasma field configurations in relativistic heavy ion collisions, connecting theoretical models with experimental data from HERA and predicting gluon multiplicities at LHC energies.

Contribution

It introduces a method to compute initial Glasma conditions using dipole model parameters fixed from HERA data, providing a more data-driven approach to initial state modeling.

Findings

Computed initial gluon multiplicities from RHIC to LHC energies.

Connected initial conditions to HERA DIS data through dipole model parametrization.

Provided a framework for more accurate initial state predictions in heavy ion collisions.

Abstract

We present results from numerical Classical Yang Mills calculations of the initial stage Glasma field configurations in a relativistic heavy ion collision. We compute the initial gluon multiplicity from RHIC to LHC energies. The initial conditions for the classical field computation are taken from a dipole model parametrization tested on HERA data, meaning that all the parameters, including the normalization and the value of the saturation scale, are fixed from DIS data.