XENONnT WIMP 搜索：信号与背景建模及统计推断
数据分析、统计与概率
2025-06-04 v2 天体物理仪器与方法
高能物理 - 实验
仪器与探测器
摘要
XENONnT 实验搜索弱相互作用大质量粒子（WIMP）散射。具体而言，XENONnT 使用含 5.9 吨液态氦的双相时间投影室，检测散射和离子化信号以重构能量、位置及散射类型。该搜索以 1.1 吨年暴露度（4.18 t fiducial 质量）进行盲目核反冲 WIMP 搜索，未发现背景预期之外的信号 excess，从而推导出 WIMP-原子弹性散射的竞争性排除限，WIMP 质量范围从 6 GeV/ 至 TeV/ 量级。本工作详细阐述了该搜索所采用的建模与统计方法。通过校准数据，我们对探测器响应进行建模，随后用于推导背景和信号模型。讨论了这些模型的构建与验证，以及其他纯数据驱动的背景。我们还描述了统计推断框架，包括似然函数的定义与置信区间的构建。
引用
@article{arxiv.2406.13638,
title = {XENONnT WIMP Search: Signal & Background Modeling and Statistical Inference},
author = {XENON Collaboration and E. Aprile and J. Aalbers and K. Abe and S. Ahmed Maouloud and L. Althueser and B. Andrieu and E. Angelino and D. Antón Martin and F. Arneodo and L. Baudis and M. Bazyk and L. Bellagamba and R. Biondi and A. Bismark and K. Boese and A. Brown and G. Bruno and R. Budnik and J. M. R. Cardoso and A. P. Cimental Chávez and A. P. Colijn and J. Conrad and J. J. Cuenca-García and V. D'Andrea and L. C. Daniel Garcia and M. P. Decowski and C. Di Donato and P. Di Gangi and S. Diglio and K. Eitel and A. Elykov and A. D. Ferella and C. Ferrari and H. Fischer and T. Flehmke and M. Flierman and W. Fulgione and C. Fuselli and P. Gaemers and R. Gaior and M. Galloway and F. Gao and S. Ghosh and R. Giacomobono and R. Glade-Beucke and L. Grandi and J. Grigat and H. Guan and M. Guida and P. Gyoergy and R. Hammann and A. Higuera and C. Hils and L. Hoetzsch and N. F. Hood and M. Iacovacci and Y. Itow and J. Jakob and F. Joerg and Y. Kaminaga and M. Kara and P. Kavrigin and S. Kazama and M. Kobayashi and A. Kopec and F. Kuger and H. Landsman and R. F. Lang and L. Levinson and I. Li and S. Li and S. Liang and Y. -T. Lin and S. Lindemann and M. Lindner and K. Liu and J. Loizeau and F. Lombardi and J. Long and J. A. M. Lopes and T. Luce and Y. Ma and C. Macolino and J. Mahlstedt and A. Mancuso and L. Manenti and F. Marignetti and T. Marrodán Undagoitia and K. Martens and J. Masbou and E. Masson and S. Mastroianni and A. Melchiorre and M. Messina and A. Michael and K. Miuchi and A. Molinario and S. Moriyama and K. Morå and Y. Mosbacher and M. Murra and J. Müller and K. Ni and U. Oberlack and B. Paetsch and Y. Pan and Q. Pellegrini and R. Peres and C. Peters and J. Pienaar and M. Pierre and G. Plante and T. R. Pollmann and L. Principe and J. Qi and J. Qin and D. Ramírez García and M. Rajado and R. Singh and L. Sanchez and J. M. F. dos Santos and I. Sarnoff and G. Sartorelli and J. Schreiner and D. Schulte and P. Schulte and H. Schulze Eißing and M. Schumann and L. Scotto Lavina and M. Selvi and F. Semeria and P. Shagin and S. Shi and J. Shi and M. Silva and H. Simgen and A. Takeda and P. -L. Tan and A. Terliuk and D. Thers and F. Toschi and G. Trinchero and C. D. Tunnell and F. Tönnies and K. Valerius and S. Vecchi and S. Vetter and F. I. Villazon Solar and G. Volta and C. Weinheimer and M. Weiss and D. Wenz and C. Wittweg and V. H. S. Wu and Y. Xing and D. Xu and Z. Xu and M. Yamashita and L. Yang and J. Ye and L. Yuan and G. Zavattini and M. Zhong},
journal= {arXiv preprint arXiv:2406.13638},
year = {2025}
}
备注
21 pages, 11 figures