A comparative study of the neutrino-nucleon cross section at ultra high energies

Understand

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.