Ultra-High Energy Cosmic Rays and Cosmogenic Neutrinos

Details Ultra-High Energy Cosmic Rays and Cosmogenic Neutrinos Ultra-High Energy Cosmic Rays and Cosmogenic Neutrinos

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004nuphs.136..159a&link_type=abstract

Nuclear Physics B, Volume 136, p. 159-168.

Physics

Nuclear Physics

1

Scientific paper

Although the sources and composition of ultra-high energies cosmic rays is unknown, in most scenarios a significant flux of very high energy neutrinos should be present throughout the universe. We show that even if ultra-high energy cosmic rays are composed of heavy nuclei from extragalactic sources, their propagation over cosmological distances generate a neutrino flux comparable to that of proton primaries depending on the maximum energy and cosmological evolution of the source. The resulting neutrino flux has a new peak at ˜ 1014 eV generated by neutron decay and reproduces the double peak structure due to photopion production at higher energies (˜ 1018 eV). The generated neutrino flux may be detected by future experiments.

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