2001/11/30 by Thomas Hambye · 8 citations
Physics and Astronomy · #Asymmetry #Baryogenesis #Dark Matter and Cosmic Phenomena #Higgs boson #Leptogenesis #Lepton #Lepton number #Mass generation #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Scale (ratio) #hep-ph
paper · pdf · doi:10.1016/s0550-3213(02)00293-6
published as Nucl.Phys.B633:171-192,2002 · 28 pages, published version, to appear in Nucl. Phys. B, section 4 slightly enlarged, minor changes
arxiv created 2002/04/16 · openalex publication_date 2002/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a general description of the problems encountered when attempting to build a simple model of leptogenesis and hence of baryogenesis at an energy scale as low as 1-10 TeV. We consider three possible lepton asymmetry enhancement mechanisms in the out-of-equilibrium decay scenario, emphasizing the three body decay mechanism as most natural. A new model based on the three body decays of right-handed neutrinos is proposed. It naturally allows both leptogenesis and neutrino mass generation at low scale. Also discussed is the possibility of inducing leptogenesis at low scale in existing neutrino mass models: Fukugita-Yanagida model, Higgs triplet model, Zee model and models with R-parity violation.