Charged particle (pseudo-)rapidity distributions in proton+anti-proton/proton+proton and Pb+Pb/Au+Au collisions from SPS to LHC energies from UrQMD

Abstract

We present results for final state charged particle (pseudo-)rapidity distributions in $\mathrm{p}$ + $\bar{\mathrm{p}}$ / $\mathrm{p}$ + $\mathrm{p}$ and Pb+Pb/Au+Au at ultra high energies (17.3 GeV $\le$ $\sqrt{s_{\mathrm{NN}}}$ $\le$ 14 TeV) from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD-v2.3) model. In addition, excitation functions of produced charged particle multiplicities ($N_{\mathrm{ch}}$) and pseudorapidity spectra are investigated up to LHC energies. Good agreement is observed between UrQMD and measured pseudorapidity distributions of charged particles up to the highest Tevatron and Sp$\bar{\mathrm{p}}$S energies.

Comments: 6 pages, 7 figures