Darker than dark - searching for hidden particles with tiny couplings
Felix Kahlhoefer (RWTH Aachen)

Over many years the experimental programme to search for dark matter has been guided by the so-called freeze-out paradigm, which assumes that interactions between the dark matter and Standard Model particles are comparable in strength to weak interactions. The non-observation of any dark matter signal has challenged this idea and led to a shift of focus towards dark matter models with even weaker interactions. At first sight, the chance of discovering such particles appears very low, but there are a number of exciting cases where potentially observable signals are predicted in spite of tiny couplings. I will present cosmological and phenomenological aspects of these models and discuss how existing and planned experiments can be used to search for such hidden particles.