2005/03/24 by Marcus Bleicher, M. Bleicher, E. Bratkovskaya +5 · 1 citation
Engineering · Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear reactor physics and engineering #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1088/0954-3899/31/6/011
published as J.Phys. G31 (2005) S709-S716 · Proceedings of Strange Quark Matter 2004
arxiv created 2005/03/24 · openalex publication_date 2005/05/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Transverse hadron spectra from proton–proton, proton–nucleus and nucleus–nucleus collisions from 2 A GeV to 21.3 A TeV are investigated within two independent transport approaches (HSD and UrQMD). For central Au+Au (Pb+Pb) collisions at energies above E lab ∼ 5 A GeV, the measured K ± transverse mass spectra have a larger inverse slope parameter than expected from the default calculations. The additional pressure—as suggested by lattice QCD calculations at finite quark chemical potential μ q and temperature T —might be generated by strong interactions in the early pre-hadronic/partonic phase of central Au+Au (Pb+Pb) collisions. This is supported by a non-monotonic energy dependence of v 2 /⟨ p T ⟩ in the present transport model.