6533b861fe1ef96bd12c43ef
RESEARCH PRODUCT
Leptogenesis in GeV scale seesaw models
Pilar HernándezJ. RackerJacobo Lopez-pavonNuria RiusM. Kekicsubject
PhysicsParticle physicsNuclear and High Energy Physics010308 nuclear & particles physicsPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologyFísicaFOS: Physical sciences01 natural sciencesStandard ModelMAJORANAHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometryLeptogenesis0103 physical sciencesCP violationHigh Energy Physics::ExperimentNeutrino010306 general physicsLeptondescription
We revisit the production of leptonic asymmetries in minimal extensions of the Standard Model that can explain neutrino masses, involving extra singlets with Majorana masses in the GeV scale. We study the quantum kinetic equations both analytically, via a perturbative expansion up to third order in the mixing angles, and numerically. The analytical solution allows us to identify the relevant CP invariants, and simplifies the exploration of the parameter space. We find that sizeable lepton asymmetries are compatible with non-degenerate neutrino masses and measurable active-sterile mixings.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-14 |