论文标题
使用强子产量比的热模型分析的化学冻结系统学
Chemical freeze-out systematics of thermal model analysis using hadron yield ratios
论文作者
论文摘要
我们提供了一个框架，以估计从$χ^2 $分析热模型分析的化学冷冻输出参数中的系统不确定性，并使用强化重型离子碰撞实验中的强子多重性比。使用众所周知的图理论技术，我们从可用的强子产量中构建了所有可能的独立比率集，并在每组中执行$χ^2 $最小化。我们表明，即使对于十个强子产量，也可以获得大量（$ 10^8 $）的独立集，从而导致提取的冻结参数的分布。我们分析了这些分布，并比较了化学冻结参数和相关的系统不确定性的结果与文献中可用的结果。
We provide a framework to estimate the systematic uncertainties in chemical freeze-out parameters extracted from $χ^2$ analysis of thermal model, using hadron multiplicity ratios in relativistic heavy-ion collision experiments. Using a well known technique of graph theory, we construct all possible sets of independent ratios from available hadron yields and perform $χ^2$ minimization on each set. We show that even for ten hadron yields, one obtains a large number ($10^8$) of independent sets which results in a distribution of extracted freeze-out parameters. We analyze these distributions and compare our results for chemical freeze-out parameters and associated systematic uncertainties with previous results available in the literature.
