UrQMD-2.3 - Changes and Comparisons

Abstract

The new version of the Ultra-relativistic Quantum Molecular Dynamics model (UrQMD-2.3) is presented. The Ultra-relativistic Quantum Molecular Dynamics model (UrQMD) is a microscopic many body approach to pp, pA and AA interactions at relativistic energies. The major updates and changes are explained and a comparison to the previous version (UrQMD-1.3p1) in the context of the available data is performed. The plots and numerical data tables for hadron (i.e. $\pi$, K, p, $\bar{p}$, $\Lambda$, $\bar{\Lambda }$, $\Xi$, $\bar{\Xi }$, $\Omega$, $\bar{\Omega }$) multiplicities, and mean transverse mass momenta, $<m_T>-m_0$ excitation functions, transverse mass spectra and rapidity distributions in pp and central Au+Au/Pb+Pb reactions from $E_{\mathrm{lab}}=2A$GeV to ${\sqrt{s}}_{\mathrm{NN}}=200$ GeV are provided in this paper. The source code of UrQMD-2.3 is available at http://www.th.physik.uni-frankfurt.de/~urqmd

Comments: 68 pages, 23 figures