https://doi.org/10.1140/epjc/s10052-025-14543-w
Regular Article - Theoretical Physics
Minimal effective theory for leptogenesis, dark matter, and neutrino masses
Department of Theoretical Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynská dolina, 84248, Bratislava, Slovak Republic
Received:
26
May
2025
Accepted:
13
July
2025
Published online:
24
July
2025
We study the phenomenology of choosing a minimal set of effective operators simultaneously generating the dark matter relic density and matter–antimatter asymmetry of the universe. Neutrino masses are obtained in a specific case of baryogenesis via leptogenesis. We find that only two new particles—a heavy unstable fermion and a light dark matter scalar—need to be included in addition to the Standard Model particle content.
© The Author(s) 2025
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