System-size dependence of charged kaon and pion production in nucleus-nucleus collisions at beam energies of 40A GeV and 158A GeV

14th International Conference on Strangeness in Quark Matter

Ströbele, H.^1

Goethe-Universität Frankfurt, Germany^1

关键词: Nucleus-nucleus collision;    Percolation models;    Pion production;    Rapidity distribution;    Small systems;    System size dependence;    Transport models;    Transverse mass;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012040/pdf
DOI  :  10.1088/1742-6596/509/1/012040

来源: IOP

【 摘 要 】

We present the system size (centrality) dependence of the mean transverse mass, of the K/π ratio, and the width of the rapidity distributions. Except for the latter a steep increase with centrality is observed for small systems followed by a weak rise or even saturation for higher centralities at both energies. This behavior is compared to calculations using transport models (UrQMD and HSD), a percolation model and the core-corona approach.