用于CRESST暗物质搜索的冷却散热器的似然框架
宇宙学与河外天体物理
2024-09-17 v2 天体物理仪器与方法
摘要
冷却散热器是用于罕见事件搜索的超灵敏粒子探测器，特别适用于暗物质搜索和测量中微子性质。这些探测器由产生两种信号的散热靶晶体构成。声子（热）信号独立于相互作用粒子类型精确测量沉积能量。散射光信号可对事件进行基于粒子类型的逐事件判别。本文提出了用于建模背景和潜在暗物质信号的似然框架，该框架在声子能量和散射光能量构成的二维平面上进行建模。我们将该框架应用于基于CaWO的探测器数据，这些探测器在CRESST暗物质搜索中运行。首次使用单一似然框架在CRESST中对数据进行建模，并通过使用概似比检验一步提取暗物质结果。我们的框架同时拟合（中子）校准数据和物理（背景）数据，允许来自多个探测器的数据组合。虽然该框架针对CaWO靶和CRESST实验，但可以轻易扩展到其他材料和使用散热器的其他实验，用于暗物质搜索和中微子物理。
引用
@article{arxiv.2403.03824,
title = {A likelihood framework for cryogenic scintillating calorimeters used in the CRESST dark matter search},
author = {CRESST Collaboration and G. Angloher and S. Banik and G. Benato and A. Bento and A. Bertolini and R. Breier and C. Bucci and J. Burkhart and L. Canonica and A. D'Addabbo and S. Di Lorenzo and L. Einfalt and A. Erb and F. v. Feilitzsch and S. Fichtinger and D. Fuchs and A. Garai and V. M. Ghete and P. Gorla and P. V. Guillaumon and S. Gupta and D. Hauff and M. Ješkovský and J. Jochum and M. Kaznacheeva and A. Kinast and H. Kluck and H. Kraus and S. Kuckuk and A. Langenkämper and M. Mancuso and L. Marini and B. Mauri and L. Meyer and V. Mokina and M. Olmi and T. Ortmann and C. Pagliarone and L. Pattavina and F. Petricca and W. Potzel and P. Povinec and F. Pröbst and F. Pucci and F. Reindl and J. Rothe and K. Schäffner and J. Schieck and D. Schmiedmayer and S. Schönert and C. Schwertner and M. Stahlberg and L. Stodolsky and C. Strandhagen and R. Strauss and I. Usherov and F. Wagner and V. Wagner and V. Zema},
journal= {arXiv preprint arXiv:2403.03824},
year = {2024}
}
备注
18 pages, 11 figures, additional figures and data in ancillary files (on arXiv or at journal reference)