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Showing papers by "Pengwei Xie published in 2015"

Journal Article•DOI•
Low-mass dark matter search results from full exposure of the PandaX-I experiment

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Xiang Xiao1, Xun Chen1, Andi Tan2, Yunhua Chen, Xiangyi Cui1, Deqing Fang3, Changbo Fu1, Karl Giboni1, Haowei Gong1, Guodong Guo1, Ming He1, Xiangdong Ji4, Xiangdong Ji1, Xiangdong Ji2, Yonglin Ju1, Siao Lei1, Shaoli Li1, Qing Lin1, Huaxuan Liu1, Jianglai Liu1, X. Liu1, Wolfgang Lorenzon, Yu-Gang Ma3, Yajun Mao4, Kaixuan Ni1, K. Pushkin1, K. Pushkin5, Xiangxiang Ren6, Michael Schubnell, Man-Bin Shen, Yu-Ji Shi1, Scott Stephenson5, Hongwei Wang3, Jiming Wang, Meng Wang6, Siguang Wang4, Xuming Wang1, Zhou Wang1, Shiyong Wu, Mengjiao Xiao1, Pengwei Xie1, Binbin Yan6, Yinghui You, Xionghui Zeng, Tao Zhang1, Li Zhao1, Xiaopeng Zhou4, Zhong-Hua Zhu •
Shanghai Jiao Tong University1, University of Maryland, College Park2, Chinese Academy of Sciences3, Peking University4, University of Michigan5, Shandong University6
04 May 2015-Physical Review D
TL;DR: In this paper, the results of a weakly interacting massive particle (WIMP) search using the full 80.1 live-day exposure of the first stage of the PandaX experiment (PandaX-I) located in the China Jin-Ping Underground Laboratory were reported.
Abstract: We report the results of a weakly interacting massive particle (WIMP) dark matter search using the full 80.1 live-day exposure of the first stage of the PandaX experiment (PandaX-I) located in the China Jin-Ping Underground Laboratory. The PandaX-I detector has been optimized for detecting low-mass WIMPs, achieving a photon detection efficiency of 9.6%. With a fiducial liquid xenon target mass of 54.0 kg, no significant excess events were found above the expected background. A profile likelihood ratio analysis confirms our earlier finding that the PandaX-I data disfavor all positive low-mass WIMP signals reported in the literature under standard assumptions. A stringent bound on a low-mass WIMP is set at a WIMP mass below 10 GeV=c(2), demonstrating that liquid xenon detectors can be competitive for low-mass WIMP searches.

69 citations