Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-11-11
Phys.Rev.D83:014014,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 3 figures
Scientific paper
10.1103/PhysRevD.83.014014
The high energy neutrino cross section is a crucial ingredient in the calculation of the event rate in high energy neutrino telescopes. Currently there are several approaches which predict different behaviours for its magnitude for ultrahigh energies. In this paper we present a comparison between the predictions based on linear DGLAP dynamics, non-linear QCD and in the imposition of a Froissart-like behaviour at high energies. In particular, we update the predictions based on the Color Glass Condensate, presenting for the first time the results for $\sigma_{\nu N}$ using the solution of the running coupling Balitsky-Kovchegov equation. Our results demonstrate that the current theoretical uncertainty for the neutrino-nucleon cross section reaches a factor three for neutrinos energies around $10^{11}$ GeV and increases to a factor five for $10^{13}$ GeV.
Goncalves Victor P.
Hepp Patrícia
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