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Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment.
Cui, Xiangyi; Abdukerim, Abdusalam; Chen, Wei; Chen, Xun; Chen, Yunhua; Dong, Binbin; Fang, Deqing; Fu, Changbo; Giboni, Karl; Giuliani, Franco; Gu, Linhui; Gu, Yikun; Guo, Xuyuan; Guo, Zhifan; Han, Ke; He, Changda; Huang, Di; He, Shengming; Huang, Xingtao; Huang, Zhou; Ji, Xiangdong; Ju, Yonglin; Li, Shaoli; Li, Yao; Lin, Heng; Liu, Huaxuan; Liu, Jianglai; Ma, Yugang; Mao, Yajun; Ni, Kaixiang; Ning, Jinhua; Ren, Xiangxiang; Shi, Fang; Tan, Andi; Wang, Cheng; Wang, Hongwei; Wang, Meng; Wang, Qiuhong; Wang, Siguang; Wang, Xiuli; Wang, Xuming; Wu, Qinyu; Wu, Shiyong; Xiao, Mengjiao; Xie, Pengwei; Yan, Binbin; Yang, Yong; Yue, Jianfeng; Zhang, Dan; Zhang, Hongguang.
Afiliação
  • Cui X; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Abdukerim A; School of Physics and Technology, Xinjiang University, Ürümqi 830046, China.
  • Chen W; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Chen X; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Chen Y; Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China.
  • Dong B; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Fang D; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Fu C; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Giboni K; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Giuliani F; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Gu L; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Gu Y; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Guo X; Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China.
  • Guo Z; School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Han K; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • He C; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Huang D; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • He S; Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China.
  • Huang X; School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China.
  • Huang Z; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Ji X; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Ju Y; Tsung-Dao Lee Institute, Shanghai 200240, China.
  • Li S; School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Li Y; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Lin H; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Liu H; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Liu J; School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Ma Y; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Mao Y; Tsung-Dao Lee Institute, Shanghai 200240, China.
  • Ni K; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Ning J; School of Physics, Peking University, Beijing 100871, China.
  • Ren X; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Shi F; Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China.
  • Tan A; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Wang C; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Wang H; Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
  • Wang M; School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Wang Q; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Wang S; School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China.
  • Wang X; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Wang X; School of Physics, Peking University, Beijing 100871, China.
  • Wu Q; School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Wu S; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Xiao M; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Xie P; Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China.
  • Yan B; Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
  • Yang Y; Center of High Energy Physics, Peking University, Beijing 100871, China.
  • Yue J; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
  • Zhang D; School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China.
  • Zhang H; INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.
Phys Rev Lett ; 119(18): 181302, 2017 Nov 03.
Article em En | MEDLINE | ID: mdl-29219592
ABSTRACT
We report a new search for weakly interacting massive particles (WIMPs) using the combined low background data sets acquired in 2016 and 2017 from the PandaX-II experiment in China. The latest data set contains a new exposure of 77.1 live days, with the background reduced to a level of 0.8×10^{-3} evt/kg/day, improved by a factor of 2.5 in comparison to the previous run in 2016. No excess events are found above the expected background. With a total exposure of 5.4×10^{4} kg day, the most stringent upper limit on the spin-independent WIMP-nucleon cross section is set for a WIMP with mass larger than 100 GeV/c^{2}, with the lowest 90% C.L. exclusion at 8.6×10^{-47} cm^{2} at 40 GeV/c^{2}.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article