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Minimal effective theory for leptogenesis, dark matter, and neutrino masses (2504.15164v2)
Published 21 Apr 2025 in hep-ph
Abstract: 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.
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