Speaker
Description
If dark matter were a new, yet undiscovered, particle, then a plethora of particle-physics models offer viable candidates. When coming to realistic scenarios, dark matter particles often interact with force carriers, either of the SM visible sector or of the hidden sector. In this case, long-range interactions may be established and become important for determining the dark matter energy density in the early universe, as well as present-day dark matter annihilations. In this talk we shall review exemplary models where Sommerfeld and bound-state effects are at play in the framework of non-relativistic effective field theories, and how they induce rather large modifications to the cosmologically viable parameter space. At the same time, the effect of bound-state formation on the indirect detection of dark matter is discussed in the context of the forthcoming Cherenkov Telescope Array (CTA).
