Leptogenesis and low energy observables in left-right symmetric models

Abstract

In the context of left-right symmetric models we study the connection of leptogenesis and low energy parameters such as neutrinoless double beta decay and leptonic CP violation. Upon imposition of a unitarity constraint, the neutrino parameters are significantly restricted and the Majorana phases are determined within a narrow range, depending on the kind of solar solution. One of the Majorana phases gets determined to a good accuracy and thereby the second phase can be probed from the results of neutrinoless double beta decay experiments. We examine the contributions of the solar and atmospheric mass squared differences to the asymmetry and find that in general the solar scale dominates. In order to let the atmospheric scale dominate, some finetuning between one of the Majorana phases and the Dirac CP phase is required. In this case, one of the Majorana phases is determined by the amount of CP violation in oscillation experiments.

18 pages, 6 figures. Matches version to appear in PRD

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• Leptogenesis, Yukawa Textures and Weak Basis Invariants
• Leptonic CP Violation and Neutrino Mass Models
• Leptogenesis, mass hierarchies and low energy parameters
• Relating Leptogenesis to Low Energy Flavor Violating Observables in Models with Spontaneous CP Violation
• Leptogenesis and a Jarlskog Invariant
• Leptogenesis in Minimal Left-Right Symmetric Models
• A Predictive Ansatz for Neutrino Mixing and Leptogenesis
• Leptogenesis in a Left-Right Symmetric Model with double seesaw
• Leptogenesis from low-energy CP violation in minimal left-right symmetric model
• Leptogenesis and Low Energy CP Violation
• Protecting the primordial baryon asymmetry in the seesaw model compatible with WMAP and KamLAND
• Neutrino CP phases and lepton electric dipole moments in supersymmetric theories
• CP Violation and the Search for New Physics