PandaX-II 实验中中子本底的改进评估
高能物理 - 实验
2024-11-25 v2 核实验
仪器与探测器
摘要
在暗物质直接探测实验中，中子是一种严重的本底源，可以模拟暗物质-核散射信号。本文通过一种新方法对 PandaX-II 暗物质实验中的中子本底进行了改进评估。该方法并非完全依赖蒙特卡罗模拟，整体中子本底由数据中中子诱发的高能信号确定。此外，使用完整的蒙特卡罗生成器评估了每个中子产生类暗物质本底的概率，其中考虑了 (, n) 反应和自发裂变中中子和 的关联发射。使用该方法，PandaX-II 的 Run 9（26 吨·天）和 Run 10（28 吨·天）数据集中的中子本底估计分别为 0.660.24 和 0.470.25 个事件。
引用
@article{arxiv.1907.00545,
title = {An Improved Evaluation of the Neutron Background in the PandaX-II Experiment},
author = {Qiuhong Wang and Abdusalam Abdukerim and Wei Chen and Xun Chen and Yunhua Chen and Xiangyi Cui and Yingjie Fan and Deqing Fang and Changbo Fu and Lisheng Geng and Karl Giboni and Franco Giuliani and Linhui Gu and Xuyuan Guo and Ke Han and Changda He and Di Huang and Yan Huang and Yanlin Huang and Zhou Huang and Peng Ji and Xiangdong Ji and Yonglin Ju and Yihui Lai and Kun Liang and Huaxuan Liu and Jianglai Liu and Wenbo Ma and Yugang Ma and Yajun Mao and Yue Meng and Parinya Namwongsa and Kaixiang Ni and Jinhua Ning and Xuyang Ning and Xiangxiang Ren and Changsong Shang and Lin Si and Andi Tan and Anqing Wang and Hongwei Wang and Meng Wang and Siguang Wang and Xiuli Wang and Zhou Wang and Mengmeng Wu and Shiyong Wu and Jingkai Xia and Mengjiao Xiao and Pengwei Xie and Binbin Yan and Jijun Yang and Yong Yang and Chunxu Yu and Jumin Yuan and Dan Zhang and Hongguang Zhang and Tao Zhang and Li Zhao and Qibin Zheng and Jifang Zhou and Ning Zhou and Xiaopeng Zhou},
journal= {arXiv preprint arXiv:1907.00545},
year = {2024}
}
备注
9 pages, 9 figures, 7 tables; version2 accepted by Sci. China Phys. Mech. Astron