Cosmo-26

From cutting rules to a minimal EFT for leptogenesis, dark matter, and neutrino masses

Not scheduled

15m

Gorlaeus gebouw (Leiden University)

Poster

Speaker

Dr Peter Matak (Comenius University (SK))

Description

Using the CPT symmetry and unitarity as a starting point, we construct a minimal set of effective operators simultaneously accounting for the dark matter relic abundance and the matter-antimatter asymmetry of the Universe. Neutrino masses are generated via the Weinberg operator within a concrete realization of baryogenesis through leptogenesis. Remarkably, the Standard Model particle content needs to be extended by only two new fields, a heavy Majorana fermion and a light scalar dark matter candidate, connected through a single portal operator to explain all three phenomena.