Low Energy Leptogenesis in Left-Right Symmetric Models

Abstract

We propose a new mechanism for baryogenesis. We study the effective potential of left-right extension of the standard model and show that there can be a first order phase transition at the left-right symmetry breaking and hence $(B-L)$ symmetry breaking scale, which is around TeV in our scenario. As a result, although $(B-L)$ violating interactions are in equilibrium at this scale, enough $(B-L)$ asymmetry may be generated. This $(B-L)$ asymmetry is then converted to baryon asymmetry during the anomalous electroweak process. If right handed gauge bosons are seen in the TeV scale, then we argue that this will be the only consistent mechanism to generate baryon asymmetry of the universe.

16 pages (Latex file) - 1 postscript figure appended

References in corpus (5)

• Baryogenesis from a Lepton Asymmetric Universe
• On Non-Perturbative Effects at the High-Temperature Electroweak Phase Transition
• Baryogenesis via lepton number violating scalar interactions
• CP Violation and Leptogenesis
• Generation of the Baryon Asymmetry of the Universe within the Left--Right Symmetric Model

Cited by in corpus (3)

• Thermal leptogenesis in a model with mass varying neutrinos
• Phase Transitions and Baryogenesis From Decays
• Models of Neutrino Masses and Baryogenesis