Jul 4 – 11, 2018
Asia/Seoul timezone

Low-scale leptogenesis with 3 right-handed neutrinos

Jul 6, 2018, 11:30 AM
202 (COEX, Seoul)


COEX, Seoul

Parallel Beyond the Standard Model Astro-particle Physics and Cosmology


Dr Michele Lucente (CP3-UCL)


We provide the first systematic study of the low-scale leptogenesis scenario in the minimal Standard Model extended with 3 right-handed neutrinos having masses at the GeV scale.
We highlight and discuss the differences between the 2- and the 3-right-handed neutrino cases, the major qualitative distinction being the possibility, in the latter scenario, of probing part of the parameter space at the LHC. Moreover, 3-right-handed neutrinos allow for the generation of a CP-asymmetry already in the oscillating sterile sector, without the need of relying on flavour asymmetric washout. We quantitatively study the differences between the parameter space of solutions in the two scenarios, highlighting the viability of the models and their testability in current and future experiments, as well as the different impact of the identified solutions in neutrino observables, as for instance in the neutrinoless double beta decay expected rate.

Primary authors

Giorgio Arcadi (MPIK Heidelberg) Valerie Domcke (SISSA) Marco Drewes (Universite Catholique de Louvain (UCL) (BE)) Mr Juraj Klaric (Technische Universität München) Dr Michele Lucente (CP3-UCL) Asmaa Abada

Presentation materials