17–24 Jul 2024
Prague
Europe/Prague timezone

Phenomenology of Scotogenic 3-loop Neutrino Mass Models

20 Jul 2024, 09:30
15m
Panorama

Panorama

Parallel session talk 02. Neutrino Physics Neutrino Physics

Speaker

Tessio de Melo (Universidad Andres Bello / Millennium SAPHIR Institute)

Description

Radiative seesaw models are examples of testable extensions of the SM to explain the light neutrino masses. In radiative seesaw models at 1-loop level, such as the popular scotogenic model, in order to successfully reproduce neutrino masses and mixing, one has to rely either on unnaturally small Yukawa couplings or on a very small mass splitting between the CP-even and CP-odd components of the neutral scalar mediators. We discuss here scotogenic-like models where light-active neutrino masses arise at the three-loop level, providing a more natural explanation for their smallness. The proposed models are in general consistent with the neutrino oscillation data and allows to accommodate the measured dark matter relic abundance. Specific realizations also allow to explain the W-mass anomaly and the baryon asymmetry of the Universe via leptogenesis. We explore the rich phenomenology of these models, in particular in near future lepton flavor violation experiments.

Alternate track 03. Beyond the Standard Model
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Primary author

Tessio de Melo (Universidad Andres Bello / Millennium SAPHIR Institute)

Co-authors

Dr Antonio Enrique Cárcamo Hernández (Universidad Técnica Federico Santa María) Asmaa Abada Nicolás Bernal (New York University Abu Dhabi) Sergey Kovalenko (Universidad Andres Bello (CL)) Dr Takashi Toma (Kanazawa University)

Presentation materials