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Particle and Astrophysics Aspects of Ultrahigh Energy Cosmic Rays
Guenter Sigl
The origin of cosmic rays is one of the major unresolved astrophysical questions. In particular, the highest energy cosmic rays observed possess macroscopic energies and their orig…
Testing the Correlation of Ultra-High Energy Cosmic Rays with High Redshift Sources
Guenter Sigl, Diego Torres, Luis Anchordoqui +1
We study the correlation between compact radio quasars or 3EG gamma-ray blazars and the arrival directions of cosmic rays above 10^19 eV using an updated list of air shower detecti…
Cosmic Neutrinos and New Physics beyond the Electroweak Scale
Craig Tyler, Angela V. Olinto, Guenter Sigl
New physics beyond the electroweak scale may increase weak interaction cross sections beyond the Standard Model predictions. Such cross sections can be expected within theories tha…
Cosmic rays and neutrino interactions beyond the standard model
Guenter Sigl
Some solutions of the hierarchy problem of particle physics can lead to significantly increased neutrino cross sections beyond the electroweak scale. We discuss some consequences f…