1999/09/30 by F. Wang, H. Liu, H. Sorge +3 · 5 citations
Physics and Astronomy · #Baryon #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Meson #Multiplicity (mathematics) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pi #Pion #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #nucl-th
paper · pdf · doi:10.1103/physrevc.61.064904
published as Phys.Rev.C61:064904,2000 · 10 pages, 8 figures, RevTeX style. A section is added to discuss effects of rope formation
openalex publication_date 2000/05/08 · arxiv created 2000/06/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a systematic study of the kaon to pion multiplicity ratios (K+/\ensuremathπ+ and K^\ensuremath-/\ensuremathπ^\ensuremath-) in heavy-ion collisions from AGS to RHIC energy using the relativistic quantum molecular dynamics (RQMD) model. The model describes reasonably well the available experimental data on K+/\ensuremathπ+ and K^\ensuremath-/\ensuremathπ^\ensuremath-. Within the model, we find that the strong increase of the ratios with the number of participants is mainly due to hadronic rescattering of produced mesons with ingoing baryons and their resonances. The enhancement of K/\ensuremathπ in heavy-ion collisions with respect to elementary p+p interactions is larger at AGS than SPS energy, and decreases smoothly with bombarding energy. The total multiplicity ratios at RHIC energy are predicted by RQMD to be K+/\ensuremathπ+=0.19 and K^\ensuremath-/\ensuremathπ^\ensuremath-=0.15.