%0 Journal Article
%T Cosmic PeV Neutrinos and the Sources of Ultrahigh Energy Protons
%A Matthew D. Kistler
%A Todor Stanev
%A Hasan Yuksel
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevD.90.123006
%X The IceCube experiment recently detected the first flux of high-energy neutrinos in excess of atmospheric backgrounds. We examine whether these neutrinos originate from within the same extragalactic sources as ultrahigh-energy cosmic rays. Starting from rather general assumptions about spectra and flavors, we find that producing a neutrino flux at the requisite level through pion photoproduction leads to a flux of protons well below the cosmic-ray data at ~10^18 eV, where the composition is light, unless pions/muons cool before decaying. This suggests a dominant class of accelerator that allows for cosmic rays to escape without significant neutrino yields.
%U http://arxiv.org/abs/1301.1703v3