用贝叶斯似然归一化法评估来自暗物质实验CRESST的$\mathrm{CaWO}_4$靶晶体的长期平衡
Secular Equilibrium Assessment in a $\mathrm{CaWO}_4$ Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation
摘要：
CRESST是一个领先的直接探测子$\mathrm{GeVc}^{-2}$暗物质实验。在其第二阶段，低温测辐射热计被用于检测从$\mathrm{CaWO}_4$靶晶核的核反冲。先前建立的电磁背景模型依赖于长期平衡（SE）假设。在这项工作中，SE的验证尝试通过比较两个可能性为基础的归一化结果，使用最近开发的光谱模板归一化方法的基础上贝叶斯似然。我们发现偏离SE;进一步的调查是必要的，以确定其来源。
英文摘要：
CRESST is a leading direct detection sub-$\mathrm{GeVc}^{-2}$ dark matter experiment. During its second phase, cryogenic bolometers were used to detect nuclear recoils off the $\mathrm{CaWO}_4$ target crystal nuclei. The previously established electromagnetic background model relies on secular equilibrium (SE) assumptions. In this work, a validation of SE is attempted by comparing two likelihood-based normalisation results using a recently developed spectral template normalisation method based on Bayesian likelihood. We find deviations from SE; further investigations are necessary to determine their origin.
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