Systematic study of the kaon to pion multiplicity ratios in heavy-ion collisions

被引：31

作者：

Wang, F

Liu, H

Sorge, H

Xu, N

Yang, J

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA

[2] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

[3] Kent State Univ, Dept Phys, Kent, OH 44242 USA

[4] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW C | 2000年 / 61卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.61.064904

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present a systematic study of the kaon to pion multiplicity ratios (K+/pi(+) and K-/pi(-)) 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+/pi(+) and K-/pi(-). 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/pi 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+/pi(+)=0.19 and K-/pi(-)=0.15.

引用

页数：10

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