Leptogenesis in Minimal Left-Right Symmetric Models

Abstract

We analyze lepton asymmetry induced in the decay of right--handed neutrinos in a class of minimal left--right symmetric models. In these models, which assume low energy supersymmetry, the Dirac neutrino mass matrix is proportional to the charged lepton mass matrix. As a result, lepton asymmetry is calculable in terms of 9 parameters, all measurable in low energy neutrino experiments. By solving the Boltzmann equations numerically we show that adequate baryon asymmetry is generated in these models. This however places significant constraints on the light neutrino parameters. We find tan^2θ_{12} = m_1/m_2 and θ_{13} = (0.01 - 0.07) for the neutrino oscillation angles, and β= α+ π/2 for the Majorana phases.

25 pages, 3 eps figures, references added

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• Leptogenesis, Yukawa Textures and Weak Basis Invariants
• Flavour-Dependent Type II Leptogenesis
• Right-Handed Sector Leptogenesis
• Neutrino Mixing and Leptogenesis in Type-II Seesaw Scenarios with Left-Right Symmetry
• Validity of quasi-degenerate neutrino mass models and their predictions on baryogenesis
• Leptogenesis in a Left-Right Symmetric Model with double seesaw
• Type-II seesaw mass models and baryon asymmetry
• See-saw fermion masses in an SO(10) GUT
• Left-Right Symmetric Model without Higgs Triplets
• Towards a more complete description of hybrid leptogenesis
• Leptogenesis from low-energy CP violation in minimal left-right symmetric model
• Neutrino Oscillations and Leptogenesis