1996/09/25 by Kari Enqvist, Enqvist, Kari
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9609464
Talk given at the Neutrino '96 Conference. 5 pages, LaTeX, 3 ps figures included
arxiv created 1996/09/25 · openalex publication_date 1996/09/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The equilibration of the right-helicity states ν+ of light Dirac-neutrinos is discussed. I point out that the ν+ production rate is enhanced by weak gauge boson pole effects so that the right-helicity component of ντ is brought into equilibrium at T≃ 10 GeV independently of the initial abundance, provided mντ\gsim 10 keV. Neutrino spin flip in primordial magnetic fields and the resulting bound on μν is also discussed.