Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment.

By X. Cui, A. Abdukerim, Wei Chen, Xun Chen, Yunhua Chen, B. Dong, D. Fang, C. Fu, K. Giboni, F. Giuliani and 46 more. Physical Review Letters, 2017

912 citations recorded by the source corpus.

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}.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/73f082d0fbfb5f271c19d5e9089cf248ab64315e

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Citations in the corpus

Fundamental composite dynamics: A review (2020, background): “5, where the solid black line corresponds to the current strongest bound from XENON1T [162] (similar bounds were obtained by LUX [164] and PandaX-II [165]).”
Mining for Dark Matter Substructure: Inferring Subhalo Population Properties from Strong Lenses with Machine Learning (2019, background): “Despite an organized effort to do so through terrestrial(e.g., Akerib et al. 2017; Cui et al. 2017; Aprile et al. 2018), astrophysical(e.g., Albert et al. 2017; Chang et al. 2018; Lisanti et al. 2018), and collider(e.g., Sirunyan et al. 2017; Aaboud et al. 2019) searches, no conclusive evidence of…”
Dark matter, millicharges, axion and scalar particles, gauge bosons, and other new physics with LDMX (2018, background): “in the missing energy plus jets channel designed to test supersymmetry [30, 31]) and from direct detection experiments [32–38].”
Refined bounds on MeV-scale thermal dark sectors from BBN and the CMB (2019, background): “The nature of dark matter is still unknown and thermal relics associated with the electroweak scale are under increasing pressure from the LHC as well as from direct and indirect detection experiments [1–13].”