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RESEARCH PRODUCT
Flavored CP asymmetries for type II seesaw leptogenesis
Filipe R. JoaquimHugo SerôdioR. Gonzalez Felipesubject
Nuclear and High Energy PhysicsParticle physicsmedia_common.quotation_subjectFlavourScalar (mathematics)FOS: Physical sciences01 natural sciencesAsymmetryHigh Energy Physics - Phenomenology (hep-ph)Baryon asymmetrySeesaw molecular geometryModels0103 physical sciences010306 general physicsmedia_commonPhysicsViolation010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyBaryogenesisFísicaAstronomy and AstrophysicsNeutrino MassesLepton numberAtomic and Molecular Physics and OpticsTripletMixingsNeutrino physicsHigh Energy Physics - PhenomenologyGaugeLeptogenesisLeptogenesisSeesaw mechanismHigh Energy Physics::ExperimentLeptondescription
A novel contribution to the leptonic CP asymmetries in type II seesaw leptogenesis scenarios is obtained for the cases in which flavor effects are relevant for the dynamics of leptogenesis. In the so-called flavored leptogenesis regime, the interference between the tree-level amplitude of the scalar triplet decaying into two leptons and the one-loop wave function correction with leptons in the loop, leads to a new nonvanishing CP asymmetry contribution. The latter conserves total lepton number but violates lepton flavor. Cases in which this novel contribution may be dominant in the generation of the baryon asymmetry are briefly discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-02 |