Exploring the dark matter inelastic frontier with 79.6 days of PandaX-II data

Abstract

We report here the results of searching for inelastic scattering of dark matter (initial and final state dark matter particles differ by a small mass splitting) with nucleon with the first 79.6-day of PandaX-II data (Run 9). We set the upper limits for the spin independent WIMP-nucleon scattering cross section up to a mass splitting of 300 keV/c${}^2$ at two benchmark dark matter masses of 1 and 10 TeV/c${}^2$.

5 pages, 6 figures

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• A 500 MS/s waveform digitizer for PandaX dark matter experiments
• A search for two-component Majorana dark matter in a simplified model using the full exposure data of PandaX-II experiment
• Constraints on inelastic dark matter from the CDEX-1B experiment