6533b82afe1ef96bd128c386
RESEARCH PRODUCT
Insensitivity of leptogenesis with flavour effects to low energy leptonic CP violation
Federica PaloriniNuria RiusSacha DavidsonJulia Garayoasubject
PhysicsParticle physics010308 nuclear & particles physicsmedia_common.quotation_subjectHigh Energy Physics::PhenomenologyGeneral Physics and AstronomyFísica01 natural sciencesAsymmetryBaryonBaryogenesisBaryon asymmetrySeesaw molecular geometryLeptogenesis0103 physical sciencesCP violationHigh Energy Physics::ExperimentNeutrino010306 general physicsmedia_commondescription
If the baryon asymmetry of the Universe is produced by leptogenesis, CP violation is required in the lepton sector. In the seesaw extension of the standard model with three hierarchical right-handed neutrinos, we show that the baryon asymmetry is insensitive to the Pontecorvo-Maki-Nagakawa-Sakata phases: thermal leptogenesis can work for any value of the observable phases. This result was well known when there were no flavor effects in leptogenesis; we show that it remains true when flavor effects are included.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 |