Thermal leptogenesis in a 5D split fermion scenario with bulk neutrinos

Abstract

We study the thermal leptogenesis in a hybrid model, which combines the so called split fermion model and the bulk neutrino model defined in five dimensional spacetime. This model predicts the existence of a heavy neutrino pair nearly degenerate in mass, whose decays might generate a CP violation large enough for creating the baryon asymmetry of the universe through leptogenesis. We investigate numerically the constraints this sets on the parameters of the model such as the size of the compactified fifth dimension.

22 pages, 9 figures

References in corpus (4)

• Sterile neutrino oscillations after first MiniBooNE results
• Electroweak Phase Transition and Baryogenesis in the nMSSM
• A Hybrid Model of Neutrino Masses and Oscillations: Bulk Neutrinos in the Split-Fermion Scenario
• TASI 2006 Lectures on Leptogenesis

Cited by in corpus (2)

• A vector-like fourth generation with a discrete symmetry from Split-UED
• Numerical study of leptogenesis in a 5D split fermion model with bulk neutrinos