Neutrino masses and leptogenesis in a L_e-L_mu-L_tau based model

30 Aug 2021, 18:00
1h 30m
Poster Neutrino physics and astrophysics Poster session 1

Speaker

Simone Marciano (Università di Roma, La Sapienza)

Description

We present a simple extension of the Standard Model with three right-handed neutrinos in a SUSY framework, with an additional U(1) abelian flavor symmetry with a non standard leptonic charge for lepton doublets and arbitrary right-handed charges. We show how it is possible to provide the correct prediction for the mixing angles of the PMNS matrix and for the parameter with a moderate fine tuning. The baryon asymmetry of the Universe is generated via thermal leptogenesis through CP-violating decays of the heavy right-handed neutrinos. We present a detailed numerical solution of the relevant Boltzmann equations accounting for the impact of the distribution of the asymmetry in the three lepton flavors.

Primary authors

Simone Marciano (Università di Roma, La Sapienza) Dr. Giorgio Arcadi (Università di Roma Tre) Prof. Davide Meloni (Università di Roma Tre)

Presentation Materials

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