Abstract
We report on the first dark-matter (DM) search results from PandaX-I, a low threshold dual-phase xenon experiment operating at the China JinPing Underground Laboratory. In the 37-kg liquid xenon target with 17.4 live-days of exposure, no DM particle candidate event was found. This result sets a stringent limit for low-mass DM particles and disfavors the interpretation of previously-reported positive experimental results. The minimum upper limit, 3.7 × 10−44 cm2, for the spin-independent isoscalar DM-particle-nucleon scattering cross section is obtained at a DM-particle mass of 49GeV/c2 at 90% confidence level.
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Xiao, M., Xiao, X., Zhao, L. et al. First dark matter search results from the PandaX-I experiment. Sci. China Phys. Mech. Astron. 57, 2024–2030 (2014). https://doi.org/10.1007/s11433-014-5598-7
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DOI: https://doi.org/10.1007/s11433-014-5598-7