$ \ mathrm {cawo} _4 $目标晶体的世俗平衡评估来自暗物质实验，使用贝叶斯的可能性归一化

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$ \ mathrm {cawo} _4 $目标晶体的世俗平衡评估来自暗物质实验，使用贝叶斯的可能性归一化

Secular Equilibrium Assessment in a $\mathrm{CaWO}_4$ Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation

论文作者

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gorla, P., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., Ferella, F., Laubenstein, M., Nisi, S.

论文摘要

CRESST是领先的直接检测子 - $ \ MATHRM {GEVC}^{ - 2} $暗物质实验。在其第二阶段，低温强仪用于检测$ \ mathrm {cawo} _4 $靶晶体核的核后坐力。先前建立的电磁背景模型依赖于世俗平衡（SE）假设。在这项工作中，尝试使用基于贝叶斯可能性的最近开发的光谱模板归一化方法比较两个基于可能性的归一化结果来尝试对SE进行验证。我们发现与SE的偏差；为了确定其起源是必要的进一步调查。

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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