1995/06/02 by A. D. Dolgov, Dolgov, A. D., S. Pastor +3
Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #astro-ph #hep-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9506011
arxiv created 1995/06/02 · openalex publication_date 1995/06/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the scenario of large scale structure formation with tau neutrino with mass in the MeV range and lifetime of order of years which decays into a massive majoron with KeV mass. The latter are the present-day cold dark matter particles. In contrast to the usual collisionless dark matter, the majorons have a relatively strong self-interaction and the picture of structure formation is rather different from the standard. The decay J \ra γγ leads to the existence of an X-ray line at Eγ= mJ/2 which could be detectable. Electron and muon neutrinos are expected to be very light, as required in order to account for the solar neutrino deficit through ≠ to \nm oscillations. Supersymmetry with spontaneously broken R parity provides a natural particle physics model for our scenario.