论文标题

通过同音触发研究集群生产机制:热模型与聚结型模型

Investigating the cluster production mechanism with isospin triggering: Thermal models versus coalescence models

论文作者

Kittiratpattana, Apiwit, Reichert, Tom, Li, Pengcheng, Limphirat, Ayut, Herold, Christoph, Steinheimer, Jan, Bleicher, Marcus

论文摘要

同胞触发可以将聚合与重离子碰撞中的光簇的热产生区分开。在$ y(π^ - ) - y(π^+)$上触发允许选择非常中子或质子富的最终状态。与合并($ d \ propto n \ cdot p $)生产的Deuteron(群集),然后导致Deuteron产量对$ΔY_π$的反抛物线依赖性。相比之下,在热模型中,集群的产生在$Δy_π$上是独立的。作为$Δy_π$的功能的最大杜特隆(群集)产量的观察提供了合并机制的确认。

Isospin triggering allows to distinguish coalescence from thermal production of light clusters in heavy ion collisions. Triggering on $Y(π^-) - Y(π^+)$ allows to select very neutron or proton rich final states. The deuteron (cluster) production with coalescence ($d \propto n \cdot p$) leads then to an inverse parabolic dependence of the deuteron yield on $ΔY_π$. In contrast, in a thermal model, cluster production is independent on $ΔY_π$. The observation of a maximum deuteron (cluster) yield as function of $ΔY_π$ provides confirmation of the coalescence mechanism.

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