Probing the QCD phase diagram with dileptons - a study using coarse-grained transport dynamics
Abstract
Dilepton production in heavy-ion collisions at various energies is studied using coarse-grained transport simulations. Microscopic output from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model is hereby put on a grid of space-time cells which allows to extract the local temperature and chemical potential in each cell via an equation of state. The dilepton emission is then calculated applying in-medium spectral functions from hadronic many-body theory and partonic production rates based on lattice calculations. The comparison of the resulting spectra with experimental data shows that the dilepton excess beyond the decay contributions from a hadronic cocktail reflects the trajectory of the fireball in the plane of the QCD phase diagram.
Cite
@article{arxiv.1609.09140,
title = {Probing the QCD phase diagram with dileptons - a study using coarse-grained transport dynamics},
author = {Stephan Endres and Hendrik van Hees and Marcus Bleicher},
journal= {arXiv preprint arXiv:1609.09140},
year = {2016}
}
Comments
5 pages, 2 figures. Contribution for the proceedings of the 10th International Conference on Critical Point and Onset of Deconfinement (CPOD 2016)