PeV Cosmic Rays: A Window on the Leptonic Era?

Details PeV Cosmic Rays: A Window on the Leptonic Era? PeV Cosmic Rays: A Window on the Leptonic Era?

2002-05-21

arxiv.org/abs/astro-ph/0205360v2

Astropart.Phys. 19 (2003) 379-392

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Astroparticle Physics

Scientific paper

10.1016/S0927-6505(02)00242-6

It is shown that a variety of characteristic features of the high-energy hadronic cosmic ray spectra, in particular the abrupt changes in the spectral index that occur around 3 PeV and 300 PeV, as well as the corresponding changes in elemental composition that are evident from kinks in the $$ distribution, can be explained in great detail from interactions with relic Big Bang antineutrinos, provided that the latter have a rest mass of $\sim 0.5$ eV/$c^2$.

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