论文标题
重型离子系统的基于热模型的表征化学冷冻系统
Thermal-model-based characterization of heavy-ion-collision systems at chemical freeze-out
论文作者
论文摘要
我们研究了重型离子碰撞（HIC）中的化学冻结以及辐射频谱对热模型分析的影响。对音激谱的详细知识仍然是一个悬而未决的问题，这对HIC的研究产生了现象学后果。通过改变强子共振气体（HRG）模型计算中包含的共振数量，我们可以阐明可能产生哪些颗粒。此外，我们研究了状态数量对所谓的两个风味冻结场景的影响，其中奇怪和光颗粒可以分开冻结。我们考虑从热模型拟合获得的化学冷冻输出参数以及计算净颗粒波动的结果。我们将展示使用一个全球温度适合所有颗粒和替代品的效果，从而使有或没有奇怪夸克的颗粒分别冻结。
We investigate the chemical freeze-out in heavy-ion collisions (HICs) and the impact of the hadronic spectrum on thermal model analyses. Detailed knowledge of the hadronic spectrum is still an open question, which has phenomenological consequences on the study of HICs. By varying the number of resonances included in Hadron Resonance Gas (HRG) Model calculations, we can shed light on which particles may be produced. Furthermore, we study the influence of the number of states on the so-called two flavor freeze-out scenario, in which strange and light particles can freeze-out separately. We consider results for the chemical freeze-out parameters obtained from thermal model fits and from calculating net-particle fluctuations. We will show the effect of using one global temperature to fit all particles and alternatively, allowing particles with and without strange quarks to freeze-out separately.
