30.05.2018XENON1T results from 1 tonne × year search for dark matter

Given the 1.3 t fiducial volume this makes it the first experiment to reach the tonne × year exposure regime, while the electronic recoil background rate of ~ 82 events / (t × yr × keV) is the lowest ever achieved by a dark matter search experiment. These achievements allowed us to reach a sensitivity to WIMPs seven times better than previous experiments (PandaX-II, LUX).

The data are consistent with the background expectation and allow us to place the strongest limit on the cross-section for spin-independent WIMP-nucleon scattering, with a minimum of 4.1 × 10⁻⁴⁷ cm² at 30 GeV / c². These results have been submitted to Physical Review Letters.