Purely flavored leptogenesis

Journal Article · Wed Jul 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.016007· OSTI ID:21308571

Sierra, D Aristizabal; Nardi, Enrico; Munoz, Luis Alfredo ^[1]

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1. INFN, Laboratori Nazionali di Frascati, C.P. 13, I00044 Frascati (Italy)

We study a model for leptogenesis in which the total CP asymmetries in the decays and scatterings involving the SU(2) singlet seesaw neutrinos N{sub {alpha}} vanish ({epsilon}{sub N{sub {alpha}}}=0). Leptogenesis is possible due to nonvanishing CP violating lepton flavor asymmetries, realizing a situation in which the baryon asymmetry is due exclusively to flavor effects. We study the production of a net lepton asymmetry by solving the Boltzmann equations specific to this model, and we show that successful leptogenesis can be obtained at a scale as low as the TeV. We also discuss constraints on the model parameter space arising from current experimental upper limits on lepton flavor violating decays.

• OSTI ID: 21308571
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevD.80.016007; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYONS
BOLTZMANN EQUATION
CP INVARIANCE
FLAVOR MODEL
LEPTONS
NEUTRINOS
PARTICLE DECAY
PARTICLE PRODUCTION
SCATTERING
SIMULATION
SU-2 GROUPS
TEV RANGE