6 papers · 1 filter
Resonant leptogenesis and tribimaximal leptonic mixing with A4 symmetry
G. C. Branco, R. Gonzalez Felipe, M. N. Rebelo +1
We investigate the viability of thermal leptogenesis in type-I seesaw models with leptonic flavour symmetries that lead to tribimaximal neutrino mixing. We consider an effective th…
Leptogenesis and Low-energy Observables
Gustavo C. Branco, M. N. Rebelo
We address the question of how to establish a connection between leptogenesis and low energy observables. We emphasize that such a connection only exists in the framework of flavou…
Small violations of unitarity, the phase in Bs mixing and visible t->cZ decays at the LHC
Francisco J. Botella, Gustavo C. Branco, Miguel Nebot
We show that it is possible to accommodate the observed size of the phase in --, mixing in the framework of a model with violation of unitarity. This…
Flavour physics of leptons and dipole moments
M. Raidal, A. van der Schaaf, I. Bigi +82
This chapter of the report of the ``Flavour in the era of the LHC'' Workshop discusses the theoretical, phenomenological and experimental issues related to flavour phenomena in the…
Weak Basis Transformations and Texture Zeros in the Leptonic Sector
G. C. Branco, D. Emmanuel-Costa, R. Gonzalez Felipe +1
We investigate the physical meaning of some of the texture zeros which appear in most of the Ansatze on leptonic masses and their mixing. It is shown that starting from arbitrary l…
A new bridge between leptonic CP violation and leptogenesis
G. C. Branco, R. Gonzalez Felipe, F. R. Joaquim
Flavor effects due to lepton interactions in the early Universe may have played an important role in the generation of the cosmological baryon asymmetry through leptogenesis. If th…