17–24 Jul 2024
Prague
Europe/Prague timezone

Beyond the N1-dominated leptogenesis with the smallest modular finite group

19 Jul 2024, 12:15
15m
Panorama

Panorama

Parallel session talk 02. Neutrino Physics Neutrino Physics

Speaker

Simone Marciano (Università di Roma Tre - INFN Sezione di Roma 3)

Description

We propose a model for leptons based on the smallest modular finite group $\Gamma_2\simeq S_3$, incorporating two right-handed sterile neutrinos $N_{1,2}$ and a single modulus $\tau$ into the Standard Model (SM) particle spectrum. In addition to offering an excellent fit to low-energy neutrino observables, we investigate the potential for explaining the baryon asymmetry of the Universe (BAU) through thermal leptogenesis. We numerically solve the unflavored Boltzmann Equations for lepton asymmetry, considering both the decays of $N_1$ and $N_2$. Our analysis leads to the conclusion that the $N_1-$dominated scenario is successful and it represents the most natural choice for the model.

Alternate track 03. Beyond the Standard Model
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Author

Simone Marciano (Università di Roma Tre - INFN Sezione di Roma 3)

Presentation materials