Bounds on very heavy relic neutrinos by their annihilation in galactic halo

Apr, 1994
34 pages
Published in:
  • Phys.Rev.D 52 (1995) 1828-1836
Report number:
  • ROME-1010-1994

Citations per year

1995200220092016202201234
Abstract: (APS)
Taking into account neutrino condensation in the gravitational field of collapsing matter, we investigate the annihilation of heavy relic neutrinos in the Galaxy resulting in the generation of cosmic rays. The main neutrino annihilation processes are considered: i.e., νν¯→ff¯ and νν¯→W+W−. The condensation mechanism allows one to get information on the density distribution in the Galaxy halo without any recourse to an explicit dynamical halo model, and the resulting cosmic ray spectrum provides constraints on the heavy neutrino mass. The comparison of the predicted cosmic ray flux with the observed one excludes the heavy neutrino mass range 60 GeV
  • galaxy
  • neutrino: annihilation
  • annihilation: neutrino
  • gravitation
  • neutrino: heavy
  • neutrino: condensation
  • neutrino: mass
  • mass: neutrino
  • cosmic radiation: flux
  • flux: cosmic radiation
Loading ...