Bounds on very heavy relic neutrinos by their annihilation in the Galactic halo

Details Bounds on very heavy relic neutrinos by their annihilation in the Galactic halo Bounds on very heavy relic neutrinos by their annihilation in the Galactic halo

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvd..52.1828f&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 52, Issue 4, 15 August 1995, pp.1828-1836

Mathematics

Logic

30

Cosmic Rays, Neutrino Interactions

Scientific paper

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

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