Studies of the Earth shielding effect to direct dark matter searches at the China Jinping Underground Laboratory
Z. Z. Liu(Tsinghua University), L. T. Yang(Tsinghua University), Q. Yue(Tsinghua University), Chih-Hsiang Yeh(Institute of Physics, Academia Sinica), K. J. Kang(Tsinghua University), Y. J. Li(Tsinghua University), M. Ağartıoğlu(Institute of Physics, Academia Sinica), Haipeng An(Tsinghua University), J. P. Chang(Nuctech (China)), C. H. Cheng(Institute of Physics, Academia Sinica), Y. H. Chen(Yalong Hydro (China)), J. P. Cheng(Beijing Normal University), W. H. Dai(Tsinghua University), Z. Deng(Tsinghua University), C. H. Fang(Sichuan University), Xiaowan Geng(Tsinghua University), Haipeng Gong(Tsinghua University), Xiangbo Guo(Yalong Hydro (China)), Q. J. Guo(Peking University), Li He(Nuctech (China)), S. M. He(Yalong Hydro (China)), J. W. Hu(Tsinghua University), H. X. Huang(China Institute of Atomic Energy), T. C. Huang(Sun Yat-sen University), H. T. Jia(Sichuan University), Xi Jiang(Sichuan University), H. B. Li(Institute of Physics, Academia Sinica), J. M. Li(Tsinghua University), J. Li(Tsinghua University), R. M. J. Li(Sichuan University), X. Q. Li(Nankai University), Y. L. Li(Tsinghua University), Bin Liao(Beijing Normal University), F. K. Lin(Institute of Physics, Academia Sinica), S. T. Lin(Sichuan University), S. K. Liu(Sichuan University), Y. Liu(Sichuan University), Y. D. Liu(Sichuan University), Y. Y. Liu(Sichuan University), H. Ma(Tsinghua University), Yajun Mao(Peking University), Q. Y. Nie(Tsinghua University), J. H. Ning(Yalong Hydro (China)), H. Pan(Nuctech (China)), N. C. Qi(Yalong Hydro (China)), Jing Ren(China Institute of Atomic Energy), X. C. Ruan(China Institute of Atomic Energy), V. Sharma(Institute of Physics, Academia Sinica), Z. She(Tsinghua University), K. Saraswat(Institute of Physics, Academia Sinica), M. K. Singh(Institute of Physics, Academia Sinica), Tao Sun(Beijing Normal University), C. J. Tang(Sichuan University), W. Y. Tang(Tsinghua University), Yang Tian(Tsinghua University), G. F. Wang(Beijing Normal University), Li Wang(Beijing Normal University), Qing Wang(Tsinghua University), Yujun Wang(Peking University), Yuhang Wang(Peking University), Zhen Wang(Sichuan University), H. T. Wong(Institute of Physics, Academia Sinica), Yongcheng Wu(Yalong Hydro (China)), Y. C. Wu(Tsinghua University), H. Y. Xing(Sichuan University), Y. Xu(Nankai University), Tao Xue(Tsinghua University), Yu-Liang Yan(Sichuan University), Yi Nan(Tsinghua University), C. X. Yu(Nankai University), H. J. Yu(Nuctech (China)), J. F. Yue(Yalong Hydro (China)), M. Zeng(Tsinghua University), Zhi Zeng(Tsinghua University), B. T. Zhang(Tsinghua University), F. S. Zhang(Beijing Normal University), Kaishun Zhang(Sichuan University), Z. H. Zhang(Sichuan University), Z. Y. Zhang(Tsinghua University), M. G. Zhao(Nankai University), J. F. Zhou(Yalong Hydro (China)), Z. Y. Zhou(China Institute of Atomic Energy), J. J. Zhu(Sichuan University)
Cited by 38Open Access
Abstract
Dark matter direct detection experiments mostly operate at deep underground laboratories. It is necessary to consider shielding effect of the Earth, especially for dark matter particles interacting with a large cross section. We analyzed and simulated the Earth shielding effect for dark matter at the China Jinping Underground Laboratory (CJPL) with a simulation package, CJPL Earth Shielding Simulation code (CJPL_ESS), which is applicable to other underground locations. The further constraints on the $\ensuremath{\chi}\text{\ensuremath{-}}\mathrm{N}$ cross section exclusion regions are derived based on the studies with CDEX experiment data.
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