Hunting light dark sectors at colliders and fixed target experiments
Luc Darme (NCBJ Warsaw)

Minimal self-consistent scenarios with light (sub-GeV) dark matter are usually accompanied by a correspondingly light "dark sector". The presence of the latter leads to bright detection prospects at fixed target experiments and colliders and potentially strong astrophysical bounds. We will illustrate this point by exploring explicitly a typical simple fermion dark matter setup, showing in particular that the presence of an often long-lived dark Higgs boson is a key element of the phenomenology.