12–19 mars 2016
Fuseau horaire Europe/Paris

Lepton number symmetry as a way to testable leptogenesis

13 mars 2016, 19:35
15m
Ordinary Theory Heavy Flavours

Orateur

Dr Michele Lucente (Centre for Cosmology, Particle Physics and Phenomenology - CP3)

Description

We propose a minimal and motivated extension of the Standard Model characterised by an approximated lepton number conservation, which is able both to 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 viable 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 Universe (weak and strong washout) in order to determine their testability in future experimental facilities.

Auteurs principaux

Dr Giorgio Arcadi (LPT Orsay) Dr Michele Lucente (Centre for Cosmology, Particle Physics and Phenomenology - CP3) Dr Valerie Domcke (Laboratoire APC - Université Paris Diderot-Paris 7) Prof. asmaa Abada (LPT-Orsay-)

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