Cosmology and exotic collider signatures from new confining sectors

Many BSM models contain new confining sectors not that far removed from the QCD scale. If particles from such a sector were produced at colliders, they would go through an hadronization process similar to QCD and produce a jet of dark hadrons, a so-called dark jet. Depending on how these particles decay and other properties of the dark sector, dark jets can lead to many exotic collider signatures, many of which could go undetected if not specifically searched for. At the same time, new confining sectors can naturally accomodate many dark matter production mechanisms beyond the WIMP paradigm. Cosmological constraints can then be used to make predictions as to what dark jets should look like at colliders. In this talk, I will give an overview of recent progress in the field with a special emphasis on work by my collaborators and I.