Inverting the seesaw formula

2003/05/28 by D. Falcone
Physics and Astronomy · #Asymmetry #Baryogenesis #Baryon asymmetry #CP violation #Dark Matter and Cosmic Phenomena #Double beta decay #Leptogenesis #Lepton #Lepton number #Mass matrix #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Radiative transfer #Seesaw molecular geometry #hep-ph

paper · pdf · doi:10.1103/physrevd.68.033002

published as Phys.Rev. D68 (2003) 033002 · 12 pages, RevTex4. Few corrections and one reference added

arxiv created 2003/05/28 · openalex publication_date 2003/08/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

By inverting the seesaw formula we determine the heavy neutrino mass matrix. The impact on baryogenesis via leptogenesis and the radiative lepton decays in supersymmetric models is described. Links to neutrinoless double beta decay are also briefly discussed. The analysis leads to two distinct matrix models. One has small mixing while the other one has maximal mixing. Both cannot give a sufficient amount of baryon asymmetry. Then we also comment on a different form of the Dirac neutrino mass matrix, which does provide sufficient baryon asymmetry. In a supersymmetric scenario the branching ratios of radiative lepton decays are enhanced for this model.

Citations

• Deviation of neutrino mixing from bimaximal mixing
• Radiative corrections to neutrino mass matrix in the Standard Model and beyond
• Where does flavour mixing come from?
• A new lepton-quark mass relation in a unified theory
• Lepton number as the fourth "color"
• CPviolation in bilarge lepton mixing
• On anomalous electroweak baryon-number non-conservation in the early universe