PT Journal
AU Herrero-Garcia, J
   Landini, G
   Vatsyayan, D
TI Asymmetries in extended dark sectors: a cogenesis scenario
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2023
BP 049
EP 41pp
VL 05
IS 5
DI 10.1007/JHEP05(2023)049
LA English
DE Models for Dark Matter; Particle Nature of Dark Matter
AB 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.
ER