Speaker
Description
In this talk we will discuss models which allows the simultaneous generation of the baryon asymmetry of the Universe along with its dark matter content. We employ the out-of-equilibrium decays of heavy bath states into a feebly coupled dark matter particle and Standard Model charged fermions. These decays lead to dark matter production via the freeze-in mechanism and, assuming that they further violate CP, can generate a viable matter-antimatter asymmetry in the resonant regime. Moreover, we will discuss how the presence of a fluid that temporarily dominates the energy content of the Universe affects the predictions of this scenario. We will show that this additional cosmic component has a significant impact on the predictions of concrete microscopic models, allowing for reheating temperatures which are much lower than those required in the simplest cosmological scenario.
