2010/01/31 by Pei-Hong Gu · 2 citations
Physics and Astronomy · #Asymmetry #Baryon #Baryon asymmetry #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Fermion #Lepton #Neutrino #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Standard Model (mathematical formulation) #Sterile neutrino #hep-ph
paper · pdf · doi:10.1103/physrevd.81.095002
published as Phys.Rev.D81:095002,2010 · 6 pages. Title changed. Minor corrections. To appear in PRD
arxiv created 2010/04/15 · openalex publication_date 2010/05/03 · arxiv updated 2010/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In the left-right symmetric models without bi-doublet Higgs scalars, the standard model fermions can obtain masses by integrating out heavy charged singlet fermions. We find the decays of heavy neutral singlet fermions, responsible for generating small neutrino masses, can simultaneously produce a left-handed lepton asymmetry for baryon asymmetry and a relic density of right-handed neutrinos for dark matter. Benefiting from the left-right symmetry, the properties of dark matter can be related to the generation of neutrino masses and baryon asymmetry. We also indicate that the decays of the nonthermally produced right-handed neutrinos can explain the observed fluxes of 511 keV photons from the Galactic bulge.