  Model-independent searches for physics beyond the Standard Model typically
focus on invariant masses of two objects (jets, leptons or photons). In this
study we explore opportunities for similar model-agnostic searches in
multi-body invariant masses. In particular, we focus on the situations when new
physics can be observed in a model-independent way in three- and four-body
invariant masses of jets and leptons. Such searches may have good prospects in
finding new physics in the situations when two-body invariant masses, that have
been extensively explored at collider experiments in the past, cannot provide
sufficient signatures for experimental observations.
