Speaker
Description
The observed dark matter relic abundance may be explained by different mechanisms,
such as thermal freeze-out/freeze-in, with one or more symmetric/asymmetric components.
In this work we investigate the role played by asymmetries in determining the
yield and nature of dark matter in non-minimal scenarios with more than one dark matter
particle. In particular, we show that the energy density of a particle may come from
an asymmetry, even if the particle is asymptotically symmetric by nature. To illustrate
the different effects of asymmetries, we adopt a model with two dark matter components.
We embed it in a multi-component cogenesis scenario that is also able to reproduce neutrino
masses and the baryon asymmetry. In some cases, the model predicts an interesting
monochromatic neutrino line that may be searched for at neutrino telescopes.
