Speaker
David Cabo Almeida
(University of Messina (Italy) & University of Barcelona (Spain))
Description
We present a freeze-in production mechanism for fermionic dark matter mediated by a $Z^\prime$ gauge boson. Freeze-in is typically a production mechanism for FIMPs. However, if the temperature of the Standard Model (SM) thermal bath never exceeds the dark matter mass, we enter a regime of Boltzmann-suppressed production. This allows for stronger couplings in a freeze-in scenario, reaching gauge couplings of up to order one. In this context, current and future direct detection dark matter experiments play a crucial role in constraining the model.
Primary authors
David Cabo Almeida
(University of Messina (Italy) & University of Barcelona (Spain))
Prof.
Giorgio Arcadi
(University of Messina (Italy))
Oleg Lebedev
(University of Helsinki)
