2003/03/31 by Kristina Giesel, K. Giesel, J. -H. Jureit +2
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph
paper · pdf · doi:10.1016/s0927-6505(03)00191-9
published as Astropart.Phys. 20 (2003) 335-360 · 3 figures changed, discussions and references added
arxiv created 2003/05/27 · openalex publication_date 2003/06/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Utilizing the unique and reliable ultrasmall--x predictions of the dynamical (radiative) parton model, nominal event rates and their detailed energy dependence caused by a variety of cosmic UHE neutrino fluxes are calculated and analyzed. In addition, maximal Regge--model inspired small--x structure functions are employed for obtaining optimal rates which do not necessarily require `new' physics interpretations. Upward μ+ +μ- event rates are estimated by taking into account total and nadir--angle dependent regeneration effects due to neutral current interactions. For exploring extragalactic neutrino sources at highest energies (\raisebox-0.1cm\stackrel>∼ 108 GeV) with modern (future) ground--level telescopes, we analyze horizontal air shower event rates and shower events caused by Earth--skimming tau--neutrinos, in particular their detailed shower-- and cosmic neutrino--energy dependence. As an illustration of `new physics' implications we estimate the relevant horizontal air shower event rates due to spin--2 Kaluza--Klein `graviton' exchanges in neutral current neutrino--quark and neutrino--gluon interactions at low TeV--scales.