Rich phenomenology of simplified models/EFTs in MET+X final states

Simplified models have played a major role in dark matter searches since the early days of LHC Run 2, providing a richer collider phenomenology that can be targeted by searches compared to the Effective Field Theory (EFT) approach. This talk will provide a short overview of the most common simplified models used at the LHC experiments and Belle/BelleII , with an emphasis on the complementarity of collider with direct (DD) and indirect detection (ID) results across the parameter space of the simplified models. Furthermore, it will review the prospects of the simplified model interpretation for Run 3 and beyond: should the parameter space for which the results are derived be extended to better highlight the interplay between collider/DD/ID searches? how useful is the EFT/simplified models approach compared to the increasingly investigated UV complete (and less simplified models)? which regions of current models can/cannot easily be accessed by collider experiments but by DD and/or ID searches.