Lepton number symmetry as a way to testable leptogenesis

Lucente, Michele;Abada, Asmaa;Arcadi, Giorgio;Domcke, Valerie
(2016) 51st Rencontres de Moriond EW 2016 — Location: La Thuile (Italy) (12.March.2016)

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  • Lucente, Micheleorcid-logoUCLouvain
    Author
  • Abada, Asmaa
    Author
  • Arcadi, Giorgio
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  • Domcke, Valerie
    Author
Abstract
We propose a minimal and motivated extension of the Standard Model characterised by an approximate lepton number conservation, which is able to simultaneously generate neutrino masses and to account for a successful baryogenesis via leptogenesis. The sterile fermions involved in the leptogenesis process have masses at the GeV scale. We determine the vi- able parameter space that complies with both the neutrino and baryogenesis phenomenology, and analyse the different regimes for the generation of a lepton asymmetry in the early Uni- verse (weak and strong-washout) in order to determine their testability in future experimental facilities.
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Lucente, M., Abada, A., Arcadi, G., & Domcke, V. (2016). Lepton number symmetry as a way to testable leptogenesis. Proceedings of the 51st Rencontres de Moriond, 2016(51), 117. https://hdl.handle.net/2078.5/172847 (Original work published 2016)