Complementarity of direct detection experiments in search of light Dark Matter

Dark Matter experiments searching for Weakly interacting massive particles (WIMPs) primarily use nuclear recoils (NRs) in their attempt to detect WIMPs. Migdal-induced electronic recoils (ERs) provide additional sensitivity to light Dark Matter with O(GeV/c(2)) masses. In this work, we use Bayesian inference to find the parameter space where future detectors like XENONnT and SuperCDMS SNOLAB will be able to detect WIMP Dark Matter through NRs, Migdal-induced ERs or a combination thereof. We identify regions where each detector is best at constraining the Dark Matter mass and spin independent cross-section and infer where two or more detection configurations are complementary to constraining these Dark Matter parameters through a combined analysis.

Automated summary

In this work, Bayesian inference is used to identify the parameter space where future detectors can detect WIMP Dark Matter through nuclear recoils, Migdal-induced electronic recoils, or a combination of both. The study determines the regions where each detector is best at constraining the Dark Matter mass and spin independent cross-section and infers the complementary nature of two or more detection configurations in constraining these Dark Matter parameters through a combined analysis.