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arxiv: 2111.11243 · v2 · pith:I4Q7FDPWnew · submitted 2021-11-22 · ✦ hep-ex · hep-ph· physics.ins-det

Studies of the Earth shielding effect to direct dark matter searches at the China Jinping Underground Laboratory

Z. Z. Liu , L. T. Yang , Q. Yue , C. H. Yeh , K. J. Kang , Y. J. Li , M. Agartioglu , H. P. An
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J. P. Chang J. H. Chen Y. H. Chen J. P. Cheng W. H. Dai Z. Deng C. H. Fang X. P. Geng H. Gong X. Y. Guo Q. J. Guo L. He S. M. He J. W. Hu H. X. Huang T. C. Huang H. T. Jia X. Jiang H. B. Li J. M. Li J. Li R. M. J. Li X. Q. Li Y. L. Li B. Liao F. K. Lin S. T. Lin S. K. Liu Y. Liu Y. D. Liu Y. Y. Liu H. Ma Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan K. Saraswat V. Sharma Z. She M. K. Singh T. X. Sun C. J. Tang W. Y. Tang Y. Tian G. F. Wang L. Wang Q. Wang Y. Wang Y. X. Wang Z. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing Y. Xu T. Xue Y. L. Yan N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng Z. Zeng B. T. Zhang F. S. Zhang Z. H. Zhang Z. Y. Zhang K. K. Zhao M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu
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classification ✦ hep-ex hep-phphysics.ins-det
keywords darkearthmattershieldingundergroundcjpleffectchina
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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 $\chi$-N cross section exclusion regions are derived based on the studies with CDEX experiment data.

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