Strongly interacting neutrinos as the highest energy cosmic rays

Details Strongly interacting neutrinos as the highest energy cosmic rays Strongly interacting neutrinos as the highest energy cosmic rays

2003-10-09

arxiv.org/abs/hep-ph/0310112v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 4 figures, talk given at Beyond the Desert '03, Castle Ringberg, 9-14 June, 2003

Scientific paper

We show that all features of the ultrahigh energy cosmic ray spectrum from 10^{17} eV to 10^{21} eV can be described with a simple power-like injection spectrum of protons under the assumption that the neutrino-nucleon cross-section is significantly enhanced at center of mass energies above \approx 100 TeV. In our scenario, the cosmogenic neutrinos produced during the propagation of protons through the cosmic microwave background initiate air showers in the atmosphere, just as the protons. The total air shower spectrum induced by protons and neutrinos shows excellent agreement with the observations. A particular possibility for a large neutrino-nucleon cross-section exists within the Standard Model through electroweak instanton-induced processes.

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