19-21 September 2023
KIT
Europe/Berlin timezone

Asymmetries in Extended Dark Sectors

21 Sep 2023, 17:20
10m
Nachrichtentechnik-Hörsaal (NTI) (KIT)

Nachrichtentechnik-Hörsaal (NTI)

KIT

Engesserstraße 5, 76131 Karlsruhe

Speaker

Drona Vatsyayan (IFIC, Universitat de Valencia)

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.

Primary author

Drona Vatsyayan (IFIC, Universitat de Valencia)

Co-authors

Dr. Juan Herrero-García (IFIC, Universitat de Valencia) Dr. Giacomo Landini (IFIC, Universitat de Valencia)

Presentation Materials

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